If p(x)=x^ 3 -ax^ 2 +bx+; leaves a remainder -19 when divided by (x + – InterviewSolution

1.	If p(x)=x^ 3 -ax^ 2 +bx+; leaves a remainder -19 when divided by (x + 2) and emainder 17 when divided by (x - 2) ,then prove that a + b = 6 . Pls dont spam i need a good answer
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