which of the following polynomials has the factors (x+7) (x-1) ?

$x^{2} + 6 x - 6$

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$x^{2} + 6 x - 9$

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$x^{2} + 6 x - 8$

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$x^{2} + 6 x - 7$

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Solution

The correct option is D
$x^{2} + 6 x - 7$

Multiply the given factors as below:

$(x + 7) (x - 1) = x^{2} - x + 7 x - 7 = x^{2} + 6 x - 7$

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