Question

5.if x-2 is a factor of x³+2ax²+ax-1 then what is the value of a

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Answer 1

Step-by-step explanation:

If x - 2 is a factor of the given expression, then,

by putting x = 2 in the expression will give us the result as 0.

=> (2)^3 + (2 × a × 2^2) + (a × 2) - 1 = 0

=> 8 + 8a + 2a - 1 = 0

=> 10a = -7

=> a = -7/10

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