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whats the answer for ^x-1=-3 1. 9 2. 16 3. 10 4. no solution
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the square root symbol over x-1 = -3
draw it.
|dw:1318118252390:dw|
3. x=10 \[\sqrt{x-1}=-3\] squaring on both sides, we get \[\Rightarrow {x-1}=9\] \[\Rightarrow {x}=9+1=10\]
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3. is right
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