РЕШИТЕ:(x+2y)^2+2x(-7x-2y) y(3y+4x)-(x+2y)^2 24ab-6(-2a-b)^2. Created by Кира2404. algebra-ru

РЕШИТЕ:(x+2y)^2+2x(-7x-2y) y(3y+4x)-(x+2y)^2 24ab-6(-2a-b)^2...

Кира2404 @Кира2404

August 2022 1 7 Report

РЕШИТЕ:(x+2y)^2+2x(-7x-2y)
y(3y+4x)-(x+2y)^2
24ab-6(-2a-b)^2

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irreversibility

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(x+2y)²+2x(-7x-2y) = х²+4ху+4у²-14х²-4ху = -13х²+4у²
y(3y+4x)-(x+2y)² = 3у²+4ху-(х²+4ху+4у²) = 3у²+4ху-х²-4ху-4у² = -у²-х²
24ab-6(-2a-b)² = 6(4ab-(2a-+b)²) = 6(4ab-(4a²+b²)) = 6(4ab-4a²-4ab-b²) = 6(-4a²-b²) = 6*(-(4a²+b²)) = -(6(4a²+b²)) = -6(4a²+b²)

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