Question

8. Calcule: (produtos Notáveis, soma e diferença)


a. (x + 5)² =

b. ( x + y)² =

c. (x + 2)2 =

d. (y – 3)² =

e. (x – y)² =

f. ( x – 7)² =

POR FAVOR ALGUEM ME AJUDA​

Answer 1

Oie, Td Bom?!

a)

$= (x + 5) {}^{2}$

$= x {}^{2} + 2x \: . \: 5 + 5 {}^{2}$

$= x {}^{2} + 10x + 25$

b)

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

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

c)

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

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

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

d)

$= (y - 3) {}^{2}$

$= y {}^{2} - 2y \: . \: 3 + 3{}^{2}$

$= y {}^{2} - 6y + 9$

e)

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

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

f)

$= (x - 7) {}^{2}$

$= x {}^{2} - 2x \: . \: 7 + 7 {}^{2}$

$= x {}^{2} - 14x + 49$

Att. Makaveli1996