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9x^2-8x-16 how do i factor this polynomial expression
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3 votes
9x^2-8x-16
how do i factor this polynomial expression

User Tbo
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1 Answer

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what multiplies to -16 but adds to -8? -4 and 4. So, it would be factored as
(x-4)(x+4), giving you solutions of x=4 and x=-4.
User Pkout
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