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Proof that square root of 2 is irrational | Algebra I | Khan Academy

465,613 views

Khan Academy

Video Language:

  • English

Caption Language:

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

Accent:

  • English (US)

Speech Time:

99%
  • 7:45 / 7:47

Speech Rate:

  • 168 wpm - Fast

Category:

  • Education

Tags :

Intro:

Video Vocabulary

actually

/ˈak(t)SH(o͞o)əlē/

adverb

Used to add new (often different) information.

assuming

/əˈso͞omiNG/

adjective conjunction verb

arrogant or presumptuous. used for purpose of argument to indicate premise on which statement can be based. To believe, based on the evidence; suppose.

contradiction

/ˌkäntrəˈdikSH(ə)n/

noun

Saying or showing something is not so.

rational

/ˈraSH(ə)n(ə)l/

adjective noun

based on or in accordance with reason or logic. rational number.

integers

/ˈin(t)əjər/

noun other

number which is not fraction. Math a whole number.

factors

/ˈfaktər/

noun other verb

something that contributes to result. Some things that influences a result. factorize.

irrational

/i(r)ˈraSH(ə)nəl/

adjective noun

not logical or reasonable. irrational number or quantity.

opposite

/ˈäpəzət/

adjective adverb noun preposition

Being totally different from. in opposite position. Person, thing that is totally different to another. Across from or on the side facing something.

through

/THro͞o/

adjective adverb preposition

From one end or side of something to the other. expressing movement into one side and out of other side of opening etc.. moving in one side and out of other side of.

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