Question

sendo A= x2+3x+3, b= 3x2-2x -1 e c = -x2-x+2, calcule A -b-c ?

Answer 1

a-b-c → x²+3x+3- (3x²-2x-1)- (-x²-x+2)=
= x²+3x+3-3x²+2x+1+x²+x-2=
= -x²+6x+2
= x²-6x-2 

espero ter ajudado ;)