Question

СРОЧНО НАДО
Учебное задание

Реши по образцу

(3х+4у)2 = (3х) 2 + 2*3х*4у+(4у) 2= 9х2 + 24 ху + 16 у2


Вычислите

(4х + у)2

(2а + 3в)2

(5 + 6m)2

(х + 2y)2

(8х + 3)2


(10х – 7 y)2

Answer 1

1)(4х)^2+2×4×у+у^2 = 16х^2+8у+у^2

2)(2а)^2+2×2а×3в+(3в)^2 = 4а^2+12ав+9в^2

3)5^2+2×5×6m+(6m)^2 = 25+60m+36m^2

4)x^2+2×x×2y+(2y)^2 = x^2+4xy+4y^2

5)(8x)^2+2×8x×3+3^2=64x^2+48x+9

6)(10x)^2-2×10x×7y+(7y)^2 = 100x-140xy+49y^2