Question

find the value of a if x-2 is a factor of x^3 - a^x + x + 2

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Answer 1

Answer:

Step-by explanation-

Let  f(x) = x3 – a2x + x + 2

Put   x - a = 0

∴   x  = a

f (a) = a3 – a2.a + a + 2

0 = a3 – a3 + a + 2

or    a + 2 = 0

∴    a = - 2

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