find value of a if x + 6 is a factor of x³+3x²+4x+a
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Step-by-step explanation:
x3+3x2+4x+a=0
(6)3 + 3 ( 6 )2 + 4 (6)+a =0
216 + 108 + 24 + a = 0
a = 216 +24 + 108
a= 348
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