Question

6- Efetue as multiplicações.
a) 5x.(2x² + 3x – 4) =
b) (5x – 3).(2x² + 4x – 3) =

ajudem prfv;)​

Answer 1

Resposta:

$a) 5x.(2x^2 +3x-4)=\\10x^3+15x^2-20x\\\\b)(5x-3).(2x^2+4x-3)=\\10x^3+15x^2-20x-6x^2-12x+9=\\10x^3+9x^2-32x+9$