Question

Escreva o monomio que adicionado a -2X² resulta em:

a) 5x²
b) -4x²
c)x²
d)0

Answer 1

Resposta:

a) 5x²

$7 {x}^{2} \\ \\ 7 {x}^{2} + ( - 2 {x}^{2} ) \\ 7 {x}^{2} - 2 {x}^{2} \\ = 5 {x}^{2}$

b) -4x²

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

c)x²

${x}^{2} \\ \\ - 2 {x}^{2} + 3 {x}^{2} \\ = {x}^{2}$

d)0

$- 2 {x}^{2} + 2 {x}^{2} \\ = 0$

Answer 2

Resposta:

a) 5x²

b) -4x²

c)x²

d)0