if x+1is a factor of ax^3-2x+4a-6,find a.
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let g(x) = x+1
=>x=-1
p(x) = ax^3-2x+4a-6 =0
♦ a×(-1)^3-2×(-1)+4×(-1)-6=0
♦ -a+2-4-6=0
♦ -a-8 =0
♦ a=8
hope it helps!!
if don't know sorry!!
=
=>x=-1
p(x) = ax^3-2x+4a-6 =0
♦ a×(-1)^3-2×(-1)+4×(-1)-6=0
♦ -a+2-4-6=0
♦ -a-8 =0
♦ a=8
hope it helps!!
if don't know sorry!!
=
Gulabharnakiya:
why you let a=-1when it is multiplied by 4
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