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Is (5x+4) a factor of (-21x^2-15-40x+5x^3
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Is (5x+4) a factor of (-21x^2-15-40x+5x^3

User JarMan
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Answer:

No. It is not.

Explanation:

Dividing 5x³+21x²-40x-15 by 5x+4 gives x²+5x-4 with a remainder. Which means, 5x+4 is not a factor of 5x³+21x²-40x-15

User Keeva
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