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Question

Solve the equation: x22x1=8

A
34,12
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B
14,13
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C
13,12
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D
14,12
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Solution

The correct option is C 14,12
Given, x22x1=8
1x22x=8
12xx2=8
12x=8x2
8x2+2x1=0
(2x+1)(4x1)
x=14,12

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