What real number that should be added to the polynomial f(x)=81x2-31, so that it is exactly divisible by 9x+1?

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answerhappygod
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What real number that should be added to the polynomial f(x)=81x2-31, so that it is exactly divisible by 9x+1?

Post by answerhappygod »

a) 40
b) 10
c) 30
d) 20
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