Question

A) (3×-10)(2×+10)60

B)(2×-2)(3×+4)

Resposta pôr favor

Answer 1

Resposta:

A)

$a) \: \: \: (3x - 10)(2x + 10)60 \\ (6 {x}^{2} + 30x - 20x - 100)60 \\ 360 {x}^{2} + 1800 x - 1200x - 6000 \\ 360x {x}^{2} + 600x - 6000$

B)

$(2x - 2)(3x + 4) \\2 \times 3 \times x {}^{1 + 1} + 2x \times 4 - 2 \times 3x - 2 \times 4 \\ 6 {x}^{2} + 8x - 6x - 8 \\ 6 {x}^{2} + 2x - 8$

Bons Estudos!