Question

b) (x + 4)²
c) (3x+8)²
d) (x + y)²​

Answer 1

Oie, Td Bom?!

b)

$= (x + 4) {}^{2}$

$= x {}^{2} + 2x \: . \: 4 + 4 {}^{2}$

$= x {}^{2} + 8x + 16$

c)

$= (3x + 8) {}^{2}$

$= (3x) {}^{2} + 2 \: . \: 3x \: . \: 8 + 8 {}^{2}$

$= 9x {}^{2} + 48x + 64$

d)

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

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

Att. Makaveli1996