if (x-2) is a factor of x³-mx²+10x -20 then find the value of m
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Answered by
7
Answer:
Let p(x)=x
3
−mx
2
+10x−20
It is given that (x−2) is a factor of p(x)=x
3
−mx
2
+10x−20
∴p(2)=0
⇒(2)
3
−m×(2)
2
+10×(2)−20=0
⇒8−4+20−20=0
⇒8−4m=0
⇒4m=8
⇒m=2
Answered by
11
Answer:
Refer to the attachment
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