Question

1. efetue: a) (3x + 2)² | b) (5y - 1)² | c) (5x + 2y) (5x - 2y) | d) (4y + 1/2)² | e) (3x² - y²)²​

Answer 1

Resposta:

Explicação passo a passo:

a) (3x + 2)²

= 9x^2 + 2.2.3x + 4

= 9x^2 + 12x + 4

b) (5y - 1)²

= 25y^2 - 2.5y.1 - 1

= 25y^2 - 10y - 1

c) (5x + 2y) (5x - 2y)

= (5x)^2 - (2y)^2

= 25x^2 - 4y^2

d) (4y + 1/2)²

= 16y^2 + 2.4y.1/2 + 1/4

= 16y^2 + 4y + 1/4

e) (3x² - y²)²

= 9x^4 - 2.3x^2.y^2 + y^4

= 9x^4 - 6x^2.y^2 + y^4