Question

b)(x + 3)². (x²- 4× + 4)​

Answer 1

Oie, Td Bom?!

$= (x + 3) {}^{2} \: . \: (x {}^{2} - 4x + 4)$

$= (x {}^{2} + 2x \: . \: 3 + 3 {}^{2} ) \: . \: (x {}^{2} - 4x + 4)$

$= (x {}^{2} + 6x + 9) \: . \: (x {}^{2} - 4x + 4)$

$= x {}^{4} - 4x {}^{3} + 4x {}^{2} + 6x {}^{3} - 24x {}^{2} + 24x + 9x {}^{2} - 36x + 36$

$= x {}^{4} + 2x {}^{3} - 11x {}^{2} - 12x + 36$

Att. Makaveli1996