Asked by Need Help

Simplify (9x^3 + 2x^2 -5x +4)-5x^3 -7x+4)

Hello I am a little confused on how to do this if you can show me all
the work or give me the steps I need to complete this myself that will help thank you and have a great day
Answered by Need Help
Well I think I figured it out
My answer is 4x^3 +2x^2 +2x ( don't quote me on this)
wish me luck on the test and thanks to any of you who tried to help.
Answered by Need Help
And for those people that might use this answer use at your own risk I'm 90% sure this is the answer but then again I'm bad at algebra so...…. yeah again use cautiously.

Thank you have a great day
Answered by Anonymous
-7 - 5 = -12 not -2
Answered by mathhelper
(9x^3 + 2x^2 -5x +4)-5x^3 -7x+4)

you have mismatched brackets, that is, the number of left brackets should
equal the number of right brackets, they don't.

ignoring the final bracket
(9x^3 + 2x^2 -5x +4)-5x^3 -7x+4
= 9x^3 + 2x^2 -5x +4 -5x^3 -7x+4
= 4x^3 + 2x^2 - 12x + 8

if you meant:
(9x^3 + 2x^2 -5x +4)-(5x^3 -7x+4)
= 9x^3 + 2x^2 -5x +4 - 5x^3 + 7x - 4
= 4x^3 + 2x^2 + 2x
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