Question

a) 4x(2-x)+3x
b)$5x^{2}-7 x^{2}+2 x^{2}$

Answer 1

$a) 4x*(2-x)+3x=8x-4 x^{2} +3x=-4 x^{2} +11x=x(11-4x)$
$b) 5 x^{2} -7 x^{2} +2 x^{2} =7 x^{2} -7 x^{2} =0$