find the value of a if X Plus a is a factor of x cube + a x square - 2 X + a+ 4
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answer ) a value is -4/3
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x=-a
(-a)^3+ a(-a)^2 + -2(-a)+a+4
-a^3+a^3+2a+a+4
3a+4
-4/3
(-a)^3+ a(-a)^2 + -2(-a)+a+4
-a^3+a^3+2a+a+4
3a+4
-4/3
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