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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

6

B

5

C

3

D

`-4`

Text Solution

Verified by Experts

`(x^(2)-5x+5)^(x^(2)+4x-60)=1`
Case I
`x^(2)-5x+5=1` and `x^(2)+4x-60` can be any real number
`impliesx=1,4`
Case II
`x^(2)-5x+c=-1` and `x^(2)+4x-60` has to be an even number ltbr gt`impliesx=2,3`
For `x=2,3`
For `x=3, x^(2)+4x-60` is odd `:.!=3`
Hence `x=2`
Case III `x^(2)-5x+5` can be any real number and
`x^(2)+4x-60=0`
`impliesx=-10,6`
`implies` Sum of all values o `x=1+4+2-10+6=3`
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