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Find the value for k for which x^4 + 10x^3 + 25x^2 + 15x + k is exactly divisible by x + 7.

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in Class 10 by kratos

Find the value for k for which x4 + 10x3 + 25x2 + 15x + k is exactly divisible by x + 7.

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by kratos
 
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If x + 7 is a factor then (-7) is a root

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