Question

Help
(4x^3 + 5x^2) + (-9x^2 + 4x)
I keep getting -x^3 + 5x^2

Answer 1

4x

Answer 2

thats not one of the choices

Answer 3

@ZeHanz

Answer 4

YOu can only add/subtract like terms:

(4x³ + 5x²) + (-9x² + 4x). Only 5x² and -9x² are like terms. They can be added. The other terms remain the same:

4x³
5x²+(-9x²)=....
4x

So the answer is 4x³ .... +4x

What is 5x²+(-9x²) ?

Answer 5

-4x^2

Answer 6

so then it would be 4x^3 - 4x^2 + 4x

Answer 7

am I right?

Answer 8

Yes, you are!