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Question

The solution of the equation x23+x13=2 is

A
-8,1
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B
8,1
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C
1,-1
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D
2,-2
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Solution

The correct option is A -8,1
Let x13=y
Then y2+y2=0
or (y+2)(y-1)=0
or y=-2, 1
When y=
2
x13 =-2
or x = -8
When y=1
x13=1
or x=1

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