x2 = 16
take the root square for both sides the result will be :
X = +4 or -4
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16 = 16 is an identity, not an equation. An identity does not have solutions.
Equations: 3x-5y = 16 and xy = 7 Solutions: (7, 1) and (-5/3, -21/5)
There is only one solution to that equation. It's . . . . . x = -16
2 this Domo
One.