5x*5x-16=0

Solution for 5x*5x-16=0 equation:

Simplifying
5x * 5x + -16 = 0

Reorder the terms for easier multiplication:
5 * 5x * x + -16 = 0

Multiply 5 * 5
25x * x + -16 = 0

Multiply x * x
25x2 + -16 = 0

Reorder the terms:
-16 + 25x2 = 0

Solving
-16 + 25x2 = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '16' to each side of the equation.
-16 + 16 + 25x2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 25x2 = 0 + 16
25x2 = 0 + 16

Combine like terms: 0 + 16 = 16
25x2 = 16

Divide each side by '25'.
x2 = 0.64

Simplifying
x2 = 0.64

Take the square root of each side:
x = {-0.8, 0.8}