1.

If minus 1 is a zero of the polynomial p x = a x cube + x square + X + 4 find the value of a

Answer»

Hey!!!!

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=> p(X) = ax³ + x² + x + 4

Since - 1 is a zero

=> p(-1) = 0

=> a(-1)³ + (-1)² - 1 + 4 = 0

=> -a + 1 - 1 + 4 = 0

=> -a = -4

=> a = 4

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Hope this helps ✌️


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