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今回(こんかい)はマイナスかけるマイナスがプラスになる理由(りゆう)数学(すうがく)(てき)考察(こうさつ)する内容(ないよう)です。

This video discusses the mathematical reasoning behind why a negative times a negative equals a positive.
579 words
早口(はやくち)今回(こんかい)はマイナスかけるマイナスがプラスになる理由(りゆう)について(かんが)えていきたいと

(はや)(くち)

N2
adj-no, n
fast-talking; rapid talking

N5
prt
indicates sentence topic(pronounced わ in modern Japanese)
prt
indicates contrast with another option (stated or unstated)

(こん)(かい)

N4
adv, n
this time; now

マイナス

N2
n, vs, vt
minus; subtraction; taking away
adj-no, n
negative (number)

かける

N3
v1, vt
to hang up (e.g. a coat, a picture on the wall); to let hang; to suspend (from); to hoist (e.g. sail); to raise (e.g. flag)
v1, vt
to put on (e.g. a blanket); to put on top of; to cover; to lay; to spread

N5
prt
indicates sentence subject (occasionally object)
prt
indicates possessive (esp. in literary expressions)

プラス

N3
n, vs, vt, conj, pref, suf
plus; addition
adj-no, n
positive (number)

N5
prt
at (place, time); in; on; during
prt
to (direction, state); toward; into

なる

N4
v5r, vi
to become; to get; to grow; to turn; to reach; to attain
v5r, vi
to result in; to turn out; to end up; to prove (to be)

()(ゆう)

N3
n
reason; pretext; motive

について

N4
exp
concerning; regarding
exp
per (e.g. 100 yen per person); for every

(かんが)えて

N3
v1, vt
to think (about, of); to think over; to ponder; to contemplate; to reflect (on); to meditate (on)
v1, vt
to consider; to bear in mind; to allow for; to take into consideration

たい

N5
suffix
want to... / would like to...

N5
prt, conj
if; when
prt, conj
and
おもいます

おもいます

N3
v5u, vt
to think; to consider; to believe; to reckon(想う has connotations of heart-felt)
v5u, vt
to think (of doing); to plan (to do)
これはね中学生(ちゅうがくせい)のときに(なら)ってまあ(なん)となく納得(なっとく)してきたことだと(おも)うんですけれども

これ

N5
pn
this; this one(indicating an item near the speaker, the action of the speaker, or the current topic)
pn
this person(usu. indicating someone in one's in-group)

N5
prt
indicates sentence topic(pronounced わ in modern Japanese)
prt
indicates contrast with another option (stated or unstated)

N5
prt
right?; isn't it?; doesn't it?; don't you?; don't you think?(at sentence end; used as a request for confirmation or agreement)
int
hey; say; listen; look; come on

(ちゅう)(がく)(せい)

N3
n
junior high school student; middle school pupil

N5
prt
indicates possessive(occasionally ん, orig. written 乃 or 之)
prt
nominalizes verbs and adjectives

とき

N4
n
time; hour; moment(刻 signifies a time of day; 秋 signifies an important time)
n, adv
occasion; case

N5
prt
at (place, time); in; on; during
prt
to (direction, state); toward; into

(なら)って

N5
vt, v5u
to take lessons in; to be taught; to learn (from a teacher); to study (under a teacher); to get training in

(なん)となく

N2
adv
somehow or other; for some reason or another; without knowing why

(なっ)(とく)

N3
n, vs, vt, vi
consent; agreement; acceptance
vi, vt, vs, n
understanding; satisfaction (e.g. with an explanation); being convinced

して

N2
vs-i
to do; to carry out; to perform
vs-i
to cause to become; to make (into); to turn (into)

きた

N5
vk, vi
to come (spatially or temporally); to approach; to arrive
vk, vi, aux-v
to come back; to do ... and come back(after the -te form of a verb)

こと

N3
n
thing; matter
n
incident; occurrence; event; something serious; trouble; crisis

N5
cop, cop-da
be; is(plain copula)
aux-v
did; (have) done(た after certain verb forms; indicates past or completed action)

N5
prt, conj
if; when
prt, conj
and

(おも)

N3
v5u, vt
to think; to consider; to believe; to reckon(想う has connotations of heart-felt)
v5u, vt
to think (of doing); to plan (to do)

N5
int
yes; yeah; uh huh
int
huh?; what?

です

N5
cop, cop-da
be; is(plain copula)
aux-v
did; (have) done(た after certain verb forms; indicates past or completed action)

けれども

N3
prt, conj
but; however; although
本当(ほんとう)意味(いみ)でしっくりきてる(ひと)はほとんどいないと(おも)います

(ほん)(とう)

N4
n, adj-no, adj-na
truth; reality; actuality; fact
adj-no, adj-na
proper; right; correct; official

N5
prt
indicates possessive(occasionally ん, orig. written 乃 or 之)
prt
nominalizes verbs and adjectives

()()

N4
vt, vs, n
meaning; significance; sense

N5
cop, cop-da
be; is(plain copula)
aux-v
did; (have) done(た after certain verb forms; indicates past or completed action)

しっくり

N3
adv-to
exactly; nicely; to a tee
vs
to be fitting

きて

N5
vk, vi
to come (spatially or temporally); to approach; to arrive
vk, vi, aux-v
to come back; to do ... and come back(after the -te form of a verb)

いる

N5
v1, vi
to be (of animate objects); to exist
v1, vi
to stay

(ひと)

N5
n
person; someone; somebody
n
human beings; mankind; man; people; humans

N5
prt
indicates sentence topic(pronounced わ in modern Japanese)
prt
indicates contrast with another option (stated or unstated)

ほとんど

N4
adv
almost; nearly; mostly; practically; virtually; basically; just about; all but
adv
hardly; barely; scarcely; little(with neg. verb)

N5
prt, conj
if; when
prt, conj
and

(おも)います

N3
v5u, vt
to think; to consider; to believe; to reckon(想う has connotations of heart-felt)
v5u, vt
to think (of doing); to plan (to do)
ひとによってはマイナスかけるマイナスがプラスになることを

によって

N4
exp
according to; by (means of); due to; because of

N5
prt
indicates sentence topic(pronounced わ in modern Japanese)
prt
indicates contrast with another option (stated or unstated)

マイナス

N2
n, vs, vt
minus; subtraction; taking away
adj-no, n
negative (number)

かける

N3
v1, vt
to hang up (e.g. a coat, a picture on the wall); to let hang; to suspend (from); to hoist (e.g. sail); to raise (e.g. flag)
v1, vt
to put on (e.g. a blanket); to put on top of; to cover; to lay; to spread

N5
prt
indicates sentence subject (occasionally object)
prt
indicates possessive (esp. in literary expressions)

プラス

N3
n, vs, vt, conj, pref, suf
plus; addition
adj-no, n
positive (number)

N5
prt
at (place, time); in; on; during
prt
to (direction, state); toward; into

なる

N4
v5r, vi
to become; to get; to grow; to turn; to reach; to attain
v5r, vi
to result in; to turn out; to end up; to prove (to be)

こと

N3
n
thing; matter
n
incident; occurrence; event; something serious; trouble; crisis

N5
prt
indicates direct object of action
prt
indicates subject of causative expression