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Find the value of a if x+6 is a factor of x cube +3x square+4x+a |
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Answer» a=132Step-by-step explanation:x + 6 = 0x = -6p(x) = X3 + 3x2 + 4x + ap(-6) = (-6)3 + 3(-6)2 + 4(-6) + a0 = -216 + 108 - 24 + a-a = -240 + 108-a = -132a = 132 |
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