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The sum of all real values of x satisfyi...

The sum of all real values of x satisfying the equation
`(x^(2) - 5x + 5 )^(x^(2 + 4x - 60)) = 1 ` is

A

3

B

-4

C

6

D

5

Text Solution

Verified by Experts

The correct Answer is:
B, D

We have, `(x^(2) - 4x + 5)^(x^(2)+4x-60) = 1`
`rArr" "x^(2) + 4x - 60 = 0 and x^(2) - 5x + 5 ne 0 or, x^(2)-5x + 5 = 1 and x^(2) = -10, 6 or, x = 1, 4`
`therefore" ""Required sum" = -10 + 6 = - 4 or, 1 + 4 = 5`
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