Question

Simplify 3x + 6x 2 - 5x - x 2

a. 6 x 2 + 2 x
b. 6 x 2 - 2 x
c. 5 x 2 - 2 x
d. 5 x 2 + 2 x

Answer 1

3x + 6x 2 -5x- x2
3x-5x=-2x
-2x+6x2-x2

−2 + 6 2− 2
6x2-x2=5x2

−2+52

5x2 -2x
Answer is C

Answer 2

i think the answer is c