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Ruutude vahe valem

Page history last edited by Laine 9 years, 5 months ago

Ruutude vahe valem

a2 - b2=(a+b)(a-b) ehk

(a+b)(a-b)= a2 - b2

 

NÄITED:

16-a2=42-a2=(4+a)(4-a)

4a2-1=(2a)2-12=(2a+1)(2a-1)

121a2b4-64x6=(11ab2)2-(8x3)2=(11ab2+8x3)(11ab2-8x3)

 

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