find the value of a and b, so that (x+1) and (x-1) are factors of x⁴+ax³-3x²+2x+b
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Let f(x) = x4 + ax3 − 3x2 + 2x + b be the given polynomial. By factor theorem, (x+1)and (x-1)are the factors of f(x) if f(−1) and f(1) both are equal to zero. Hence, the value of a and b are – 2 and 2 respectively.
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