16x^2-4=77

Solution for 16x^2-4=77 equation:

Simplifying
16x2 + -4 = 77

Reorder the terms:
-4 + 16x2 = 77

Solving
-4 + 16x2 = 77

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 + 16x2 = 77 + 4

Combine like terms: -4 + 4 = 0
0 + 16x2 = 77 + 4
16x2 = 77 + 4

Combine like terms: 77 + 4 = 81
16x2 = 81

Divide each side by '16'.
x2 = 5.0625

Simplifying
x2 = 5.0625

Take the square root of each side:
x = {-2.25, 2.25}