Question

the product of 5 and the cube of x, increased by the difference of 6 and x3

Answer 1

$(5*x^3)+(6-x^3)=5x^3+6-x^3=4x^3+6=2(2x^3+3)\\\\The \ simplest\ form\ is\ 2(2x^3+3).$

Answer 2

$5x^3+(6-x^3)=5x^3+6-x^3=4x^3+6=2(x^3+3)$