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OpenStudy (anonymous):
What is the product of the polynomials below? (7x2 + 9x + 8)(9x3 + 7x)
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Parth (parthkohli):
\(\Large \color{MidnightBlue}{\Rightarrow 9x^3(7x^2 + 9x + 8) + 7x(7x^2 + 9x + 8) }\)
OpenStudy (anonymous):
63x5 + 81x4 - 121x3 + 63x1 + 56x
Parth (parthkohli):
\(\Large \color{MidnightBlue}{\Rightarrow 63x^5 + 81x^4 + 72x^3 + 49x^3 + 63x^2 + 56x }\) Operate on the like terms.
OpenStudy (anonymous):
63x5 + 153x4 + 112x3 + 56x
Parth (parthkohli):
Where did that 153x4 come from?
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OpenStudy (anonymous):
63x6 + 81x4 + 121x3 + 63x2 + 56x
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