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Simplifying
4x2 + -4 = 16
Reorder the terms:
-4 + 4x2 = 16
Solving
-4 + 4x2 = 16
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '4' to each side of the equation.
-4 + 4 + 4x2 = 16 + 4
Combine like terms: -4 + 4 = 0
0 + 4x2 = 16 + 4
4x2 = 16 + 4
Combine like terms: 16 + 4 = 20
4x2 = 20
Divide each side by '4'.
x2 = 5
Simplifying
x2 = 5
Take the square root of each side:
x = {-2.236067978, 2.236067978}
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