Question

1)calcule

a)(×+y)²=


b)(5+3×)²=

c)(3y+3×)²=


d)(-5+n)²=​

Answer 1

Explicação passo-a-passo:

A) (x +y) × (x +y)

x* +2xy +y*

B) (5+3x) × (5+3x)

25 +15x +15x +9x*

9x* +30x +25

C) (3y+3x) × (3y+3x)

9y* +9xy +9xy +9x*

9x* +18xy +9y*

D) (-5 +n) × (-5 +n)

25 -5n -5n +n*

n* -10n +25