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Question

If a=x then which number satisfies the equation: x+a2=(2x−5)?


A

10

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B

5

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C

2

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D

7

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Solution

The correct option is A

10


The equation in the above question is x+a2=(2x5)
We need to find the value of x.
Substituting the value 'x=a' and solving.

x+x2=(2x5)

3x2=(2x5)

2x3x2=5

x2=5

x=5×2

x=10


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