Question

if x+1 is a factor of polynomial 3x^2+mx, then the value of m is ​

Answer 1

Answer:

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Answer 2

(x−1) is a factor of 3x 2 +mx

Then upon dividing it. The remainder should be equal to zero ⇒1

x−1∣3x 2 +mx∣3x

3x 2+3x

_______________

mx+3x

∴mx+3x=0

⇒(m+3)x=0

⇒m+3=0 or x=0

⇒m=−3

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