Question

From the sum of 4+3x and 5-4x +2x^2 subatract the sum of 4x^2 -2x^2 and -2x^2+4x+5

Answer 1

First add (4+3x) , (5-4x+ 2x^2)

=9-x+2x^2

Second add (4x^2-2x^2) & (-2x^2+4x+5)

=2x^2-2x^2+4x+5

=4x+5

Lastly subtract (9-x+2x^2) & 4x+5

=4-5x+2x^2 x

That's your answer