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Why a negative times a negative is a positive | Pre-Algebra | Khan Academy

839,637 views

Khan Academy

Video Language:

  • English

Caption Language:

  • {{captionLanguage | language_name}} ({{captionLanguage}})

Accent:

  • English (US)

Speech Time:

100%
  • 5:46 / 5:46

Speech Rate:

  • 164 wpm - Fast

Category:

  • Education

Tags :

Intro:

Video Vocabulary

hopefully

/ˈhōpfəlē/

adverb

in hopeful manner.

mathematics

/maTH(ə)ˈmadiks/

noun other

abstract science of number, quantity. Studies or science of numbers and shapes.

comfortable

/ˈkəmfərdəb(ə)l/

adjective noun

Being relaxed, warm or happy. quilt.

picking

/pik/

verb

To decide on a thing from various choices; select.

whatever

/(h)wətˈevər/

adjective adverb determiner exclamation pronoun

Referring to any particular kind, type, quantity. at all. Anything or everything needed; no matter what. said as response indicating reluctance to discuss something, often implying indifference. (Used to dismiss what someone is saying).

already

/ˌôlˈredē/

adverb

Having happened or been done before this time.

subtract

/səbˈtrakt/

other verb

To take away a value or amount from another. take away number or amount from another to calculate difference.

positive

/ˈpäzədiv/

adjective noun

Showing that a chemical is present in a test. positive quality.

actually

/ˈak(t)SH(o͞o)əlē/

adverb

Used to add new (often different) information.

consistent

/kənˈsistənt/

adjective

acting or done in same way over time.

preferably

/ˈpref(ə)rəblē/

adverb

ideally.

represent

/ˌreprəˈzent/

verb

To act on behalf of others in government.

because

/bēˈkəz/

conjunction

For a reason.

happens

/ˈhapən/

verb

To take place or occur.

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