Question

f(x) = (3x²+5x) (4x-9)​

Answer 1

Respuesta:

$f(x) = (3x^{2} + 5x)(4x - 9) \\ = 3x^{2} \times 4x - 3x^{2} \times 9 + 5x \times 4x + 5x \times 9 \\ = 12x^{3} - 27x^{2} + 20x^{2} - 45x \\ = 12x^{3} - 7x ^{2} - 45x$