if x+1 is a factor of ax^{3} +x^{2} - 2x+ 4a-9 ,find the value of a
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given polynomial,
ax³+x²-2x+4a-9
(x+1) is a factor of the polynomial.
x+1=0
x= -1
Put x= -1 in the polynomial.
a(-1)³+(-1)²-2(-1)+4a-9=0
a(-1)+1+2+4a-9=0
-a-6+4a=0
3a=6
a=6/3
a=2
Hope it helps...
ax³+x²-2x+4a-9
(x+1) is a factor of the polynomial.
x+1=0
x= -1
Put x= -1 in the polynomial.
a(-1)³+(-1)²-2(-1)+4a-9=0
a(-1)+1+2+4a-9=0
-a-6+4a=0
3a=6
a=6/3
a=2
Hope it helps...
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