21. If (x – 1) and (x + 4) are factors of polynomials p(x) = (x2 – 3x + 2)(r2 + 7x+)
and g() = (r? + 5x +4)72 – 5x + b), find

21. If (x – 1) and (x + 4) are factors of polynomials p(x) = (x2 – 3x + 2)(r2 + 7x+)
and g() = (r? + 5x +4)72 – 5x + b), find the values of a and b.​

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