Question

3 - Resolva os produtos notaveis:

a- (x + 5$)^{2}$

b- (x + y$)^{2}$

c- (2x + y$)^{2}$

Answer 1

Caso tenha problemas para visualizar a resposta experimente abrir pelo navegador https://brainly.com.br/tarefa/36131527

                                                                                                     

$\tt a)~\sf (x+5)^2=x^2+2\cdot x\cdot5+5^2\\\sf (x+5)^2=x^2+10x+25\checkmark\\\tt b)~\sf(x+y)^2= x^2+2xy+y^2\checkmark\\\tt c)~\sf (2x+y)^2=(2x)^2+2\cdot2x\cdot y+y^2\\\sf (2x+y)^2=4x^2+4xy+y^2\checkmark$

Answer 2

Oie, Td Bom?!

a)

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

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

$= x {}^{2} + 10x + 5 {}^{2}$

b)

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

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

c)

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

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

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

Att. Makaveli1996