Find the equation of the normal to the c...

Find the equation of the normal to the curve `y = 5x + x^2` which makes an angle `45^@` with x axis.

A

`x - y = 3`

B

`2x - y = 3`

C

`x - 2y = 3`

D

`x - y = 2`

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The correct Answer is:

A

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