if f(x)=x^3+4x^2+kx+7/8 has a factor (2x-1),find the value of k.
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Answered by
3
Answer:
Hiii
Step-by-step explanation:
Let the function be represented by f(x).
As x+2, exactly divides f(x),
−2 is a zero of f(x), hence f(−2)=0
f(x)=2x
3
+5x
2
−x−k
f(−2)=2(−2
3
)+5(−2
2
)+2−k=0
⇒0=−16+20+2−k
⇒k=6
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Answered by
1
The value of k is -4
hope it helps you::)
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