1.

Check whether X + 2 is factor of x cube + 3 x square+ 5x+6

Answer»

X+1=0
x=-1

p(-1)=(-1)³ + 3×(-1)²+ 5×(-1) +6
= -1 + 3 - 5 +6
= 2-1
= 1

It is not a factor.

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