find the value of a if (x+a) is a factor of the polynomial x^3+ax^2+2x+a+4
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hey your ans is here
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given
x+a is a factor so
x+a=0
x=-a
now put this value in
x3+ax2+2x+a+4=0
(-a)3+a×(-a)2+2×(-a)+a+4=0
-a3+a3-2a+a+4=0
-a+4=0
a=4
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_______
given
x+a is a factor so
x+a=0
x=-a
now put this value in
x3+ax2+2x+a+4=0
(-a)3+a×(-a)2+2×(-a)+a+4=0
-a3+a3-2a+a+4=0
-a+4=0
a=4
________
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