Find a and b so the the polynomial x^4+ax^3-7x^2+8x+b is exactly divisible by X^2+5x+6
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x2 + 5 x + 6 has x + 2 as one factor, hence
if we put x = -2, value of P( X ) should be zero, so
16 - 8a - 28 - 16 + b = 0 or b - 8a = 28. so if a = 1 then b = 36
if we put x = -2, value of P( X ) should be zero, so
16 - 8a - 28 - 16 + b = 0 or b - 8a = 28. so if a = 1 then b = 36
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