the polynomial p(x)= x^3+ 15x^2+9x-a when divided by (x + 4) leaves the remainder -80. find a
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x = -4
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(-4)³ + 15(-4)² + 9(-4) - a = -80
-64 + 240 - 36 + 80 = a
320 - 100 = a
220 = a
i hope this will help you
-by ABHAY
-----------------------
(-4)³ + 15(-4)² + 9(-4) - a = -80
-64 + 240 - 36 + 80 = a
320 - 100 = a
220 = a
i hope this will help you
-by ABHAY
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