Question

Simplify. (2x^2-5x+2)+(x^2-2x+5)
A. 3x^2-7x+7
B.3x^2-3x+7
C. 2x^2+3x+7

Answer 1

you can remove the parens (they are not "doing" anything)
2x^2-5x+2+x^2-2x+5

notice when you add numbers you can swap their order, so you could write this as
2x^2+x^2 + -5x + -2x +2 +5

can you add the last two numbers ?

Answer 2

What do you mean add the last two numbers?

Answer 3

what is 2+5 ?

Answer 4

Ohh 7