Помогите разложить примеры. 7-8 класс. даю 72 балла (2х-1)^2 (3+4х)^2 (3х-1)^2 (5-2x)(5+2x) (x-2)(x^2+2x+4). Created by strizhnevan. algebra-ru

Помогите разложить примеры. 7-8 класс. даю 72 балла (2х-1)^2 (3+4х)^2 (3х-1)^2 (...

krugly1981

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( 2x - 1)^2 = 4x^2 - 4x + 1
( 3 + 4x)^2 = 9 + 24x + 16x^2
( 3x - 1)^2 = 9x^2 - 6x + 1
( 5 - 2x)(5 + 2x) = 5^2 - (2x)^2 = 25 - 4x^2
( x - 2)(x^2 + 2x + 4) = x^3 - 2^3 = x^3 - 8

93931

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(2x-1)²=4x²-4x+1.
(3+4x)²=9+24x+16x².
(3x-1)²=9x²-6x+1.
(5-2x)(5+2x)=25-4x².
(x-2)(x²+2x+4)=x³-8.

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