SOLUTION: I'm a substitute teacher and I just want to see if i got these questions right before helping students. Find each sum. Write your answer in standard form. (3x^2-4)+(5x^2+8) I go

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I'm a substitute teacher and I just want to see if i got these questions right before helping students. Find each sum. Write your answer in standard form. (3x^2-4)+(5x^2+8) I go      Log On


   

Question 711668: I'm a substitute teacher and I just want to see if i got these questions right before helping students.
Find each sum. Write your answer in standard form.
(3x^2-4)+(5x^2+8)
I got 8x^2+4
You dont distribute cause its adding i think i remember and you only add if they have same powers. Please help soon.
Found 2 solutions by lynnlo, stanbon:
Answer by lynnlo(4176) About Me  (Show Source):
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find each sum. Write your answer in standard form.
(3x^2-4)+(5x^2+8)
I got 8x^2+4
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You are correct.
Cheers,
Stan H.