Question

18. Calcule

A) (3-1/2x)(3+1/2x)

B) (1/3x +1)(1/3x-1)

Answer 1

Olá, boa noite ☺

Resolução:

a)

(3-1/2x)(3+1/2x)

9 + 3/2x - 3/2x - 1/4x²

9 - 1/4x²

b)

(1/3x +1)(1/3x-1)

1/9x² - 1/3x + 1/3x - 1.

1/9x²- 1

Bons estudos :)

Answer 2

Resposta:

a)(9-1/4 x²)

b)(1/9 x² -1)