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Question

State true or false:
If 1x+1+1x2=1x3, then x is 5 or 0.

A
True
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B
False
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Solution

The correct option is B False
1x+1+1x2=1x3
x2+x1(x+1)(x2)=1x3
(2x1)(x3)=(x2)(x+1)
2x26xx+3=x22x+x2
x26x+5=0
x25xx+5=0
(x5)(x1)=0
x=1,5

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