if lx+2l =4 , what is the value of x?
1) x^2 is NOT 4
2) x^2 = 36
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magical cook
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StarDust845
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Stem: |x+2| = 4, implies x+2 = 4 or x+2 = -4, which inturn implies x = 2 or -6.
From I, x = -6. Hence answer is A or D
From II, x = -6.
Hence answer is D.
From I, x = -6. Hence answer is A or D
From II, x = -6.
Hence answer is D.
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magical cook
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thanks,
1) is def sufficient
but for 2) x^2 = 36 is +/- 6, so I was not sure if it's okay to say suff for the answewr -6..
1) is def sufficient
but for 2) x^2 = 36 is +/- 6, so I was not sure if it's okay to say suff for the answewr -6..
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StarDust845
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Good question. I believe it is sufficient because:
Given in stem: x = 2 or -6.
From II we get x = 6 or -6. When I combine this info with what it given in stem, I get a unique value of x.
Calista.
Given in stem: x = 2 or -6.
From II we get x = 6 or -6. When I combine this info with what it given in stem, I get a unique value of x.
Calista.
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magical cook
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