SOLUTION: Multiply and simplify (y^2-8)(9y^2-9y+8) The solution I got was 9y^4-9y^3-64y^2+72Y-64 Is this correct

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Multiply and simplify (y^2-8)(9y^2-9y+8) The solution I got was 9y^4-9y^3-64y^2+72Y-64 Is this correct      Log On


   

Question 327508: Multiply and simplify
(y^2-8)(9y^2-9y+8)
The solution I got was
9y^4-9y^3-64y^2+72Y-64
Is this correct
Found 2 solutions by stanbon, Earlsdon:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
(y^2-8)(9y^2-9y+8)
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9y^4-9y^3+9y^2-73y2+72y-64
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9y^4-9y^3-64y^2+72y-64
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Cheers,
Stan H.

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
You got it!
%28y%5E2-8%29%289y%5E2-9y%2B8%29+=+9y%5E4-9y%5E3%2B8y%5E2-72y%5E2-72y-64=highlight%289y%5E4-9y%5E3%2B64y%5E2%2B72y-64%29