Question

If f(x) = 2x2 – 4x + 5 and g(x) = 2x – 2, what is f(x) + g(x) ?

2x2 + 2x – 3

2x2 + 6x – 7

2x2 – 6x + 7

2x2 – 2x + 3

Answer 1

f(x) + g(x) is short for writing down what f(x) is and adding what g(x) is
then simplify

can you do that ?

Answer 2

(2x2 – 4x + 5)+(2x – 2)

Answer 3

yes, now can you simplify, by combining "like terms"
btw, you can first drop the parens.

Answer 4

for example, you have -4x plus 2x. that can be simplified to -2x (2 x's take away 4 x's leaves -2 x's)

Answer 5

2x2−2x+3