condition that (X+1) is a factor of ax^3+ bx^2 +cx+d is
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Answer:
Condition is a+c=b+d
Step-by-step explanation:
If x-a is a factor of f(x) then f(a)=0
f(x)=ax³+bx²+cx+d
x-a=x+1
a=-1
f(a)=0
f(-1)=0
a(-1)³+b(-1)²+c(-1)+d=0
-a+b-c+d=0
a+c=b+d
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