Math, asked by OliviaJacob1606, 1 year ago

If (-5) is remainder when 2x ^3-mx^2+9 is divided by 2x+1, find the value of m.

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Answers

Answered by karunarandive

2x+1=0
x=-1/2
put x=-1/2 in dividend
2 (-1/2)^3-m (-1/2)^2+9=-5
2 (-1/8)-m/4+9=-5
-1/4-m/4=-14
-1/4 (1-m)=-14
(1-m)=-14×-4
1-m=56
m=-55

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Answered by nikitapadalwar

Hey mate ,

Here is your answer ,

2x+1=0

x=-1/2

put x=-1/2 in dividend

2 (-1/2)^3-m (-1/2)^2+9=-5

2 (-1/8)-m/4+9=-5

-1/4-m/4=-14

-1/4 (1-m)=-14

(1-m)=-14×-4

1-m=56

m=-55

Hope it will help you !!!

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