What is 5x^2+4x=80 times x^2-5x-24=0

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asked Mar 17, 2017 174k views

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Banty · Answer 1 · 2017-03-21T22:11:16+0000

(5x²+4x-80)(x²-5x-24)=5x²(x²-5x-24)+4x(x²-5x-24)-80(x²-5x-24)
{distributive property of multiplication}
=5x^4-25x³-120x²+4x³-20x²-96x-80x²+400x+1920
=5x^4-21x³-220x²+304x+1920
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What is 5x^2+4x=80 times x^2-5x-24=0

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