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faust18 [17]
3 years ago
11

If x ─1 is a factor of 2x³+x² ─ 4x +m , find m

Mathematics
1 answer:
vivado [14]3 years ago
6 0
Since x-1 is a factor than
(X-1) •(someting ) =2x^3 +x^2 -4x+m=0
X-1=0 so x=1
Substitute in the equation
2•1+1-4+m=0
-3+m=0
m=3



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