Question

dados
A=x^2+3x+3
B=3x^2-2x-1
C=-x2-x+2

calcule
a)A-B-C
b)-A-B+C
c)-C+B-A
d)A+(B-C)​

Answer 1

a) x²+3x+3-(3x²-2x-1)-(-x²-x+2) = x²+3x+3-3x²+2x+1+x²+x-2

= -x²+6x+3

b)-(x²+3x+3)-(3x²-2x-1)+(-x²-x+2) = -x²-3x-3-3x²+2x+1-x²-x+2

= -5x²-2x

c)-(-x²-x+2)+(3x²-2x-1)-(x²+3x+3) = x²+x-2+3x²-2x-1-x²-3x-3

= 3x²-4x-6

espero que tenha dado para entender :)