Posted by **Anonymous** on Friday, February 21, 2014 at 4:45pm.

Add (5x^2 - 2x + 9) + (2x^2 - 4).

My answer: 7x^4 - 2x + 5 or 7x^2 - 2x + 5?

- Algebra 1 -
**Reiny**, Friday, February 21, 2014 at 4:52pm
Your question was answered , go back and check

- Algebra 1 -
**PsyDAG**, Friday, February 21, 2014 at 4:53pm
The latter. Exponents are added when multiplying terms.

- Algebra 1 -
**Anonymous**, Friday, February 21, 2014 at 4:54pm
I am confused. Steve said the correct answer is 7x^4 - 2x + 5.

- Algebra 1 -
**Reiny**, Friday, February 21, 2014 at 5:13pm
5x^2 + 2x^2 = 7x^2

(5 apples + 2 apples = 7 apples)

Steve had a typo, happens even to the best of us

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