Question

D - (3x+2)²
E - (2X+1)²
F - (3y+3x)2
me ajudem por favor ​

Answer 1

Oie, Td Bom?!

d)

$= (3x + 2) {}^{2}$

$= (3x) {}^{2} + 2 \: . \: 3x \: . \: 2 + 2 {}^{2}$

$= 9x {}^{2} + 12x + 4$

e)

$= (2x + 1) {}^{2}$

$= (2x) {}^{2} + 2 \: . \: 2x \: . \: 1 + 1 {}^{2}$

$= 4x {}^{2} + 4x + 1$

f)

$= (3y + 3x) {}^{2}$

$= (3y) {}^{2} + 2 \: . \: 3y \: . \: 3x + (3x) {}^{2}$

$= 9y {}^{2} + 18xy + 9x {}^{2}$

Att. Makaveli1996