Question

3. Find the value of 'a' if (x-a) is a factor of
$( {x}^{3} - {a}^{2}x + x + 2)$
​

Answer 1

Let f (x) =x³-a²x+x+2

Put x-a=0

X=a

Let f (x) =a³-a²×a+a+2

=a³-a³+a+2

Or a+2=0

A= - 2

I hope you understand

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