An algebra problem by abhishek anand
Algebra
Level
1
X^2=4 How many real values does x satisfy?
1
INFINITE
2
3
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1 solution
x may be either -2 or 2
-2^2 = -2 x -2 = 4
2^2 = 2 x 2 = 4
So there are 2 real values satisfying x^2 = 4