Question

Calcule os produtos

c) (4x^4).(2x^2+9x-6)

d) (7a^3+3b).(6a-b^2)

Answer 1

$c)( {4x}^{4} ) \times ( {2x}^{2} + 9x - 6) \\ {8x}^{6} + {36x}^{5} - {24x}^{4} \\ \\ d) \: ({7a}^{3} + 3b) \times (6a - {b}^{2}) \\ {42a}^{4} - {7a}^{3} {b}^{2} + 18ba - {3b}^{3}$