4(9x^2-25)=0

Solution for 4(9x^2-25)=0 equation:

Simplifying
4(9x2 + -25) = 0

Reorder the terms:
4(-25 + 9x2) = 0
(-25 * 4 + 9x2 * 4) = 0
(-100 + 36x2) = 0

Solving
-100 + 36x2 = 0

Solving for variable 'x'.

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

Add '100' to each side of the equation.
-100 + 100 + 36x2 = 0 + 100

Combine like terms: -100 + 100 = 0
0 + 36x2 = 0 + 100
36x2 = 0 + 100

Combine like terms: 0 + 100 = 100
36x2 = 100

Divide each side by '36'.
x2 = 2.777777778

Simplifying
x2 = 2.777777778

Take the square root of each side:
x = {-1.666666667, 1.666666667}