posted by Anonymous .
Add (5x^2 - 2x + 9) + (2x^2 - 4).
My answer: 7x^4 - 2x + 5 or 7x^2 - 2x + 5?
Your question was answered , go back and check
The latter. Exponents are added when multiplying terms.
I am confused. Steve said the correct answer is 7x^4 - 2x + 5.
5x^2 + 2x^2 = 7x^2
(5 apples + 2 apples = 7 apples)
Steve had a typo, happens even to the best of us