(8-10x*5x+4)=0

Solution for (8-10x*5x+4)=0 equation:

Simplifying
(8 + -10x * 5x + 4) = 0

Reorder the terms for easier multiplication:
(8 + -10 * 5x * x + 4) = 0

Multiply -10 * 5
(8 + -50x * x + 4) = 0

Multiply x * x
(8 + -50x2 + 4) = 0

Reorder the terms:
(8 + 4 + -50x2) = 0

Combine like terms: 8 + 4 = 12
(12 + -50x2) = 0

Remove parenthesis around (12 + -50x2)
12 + -50x2 = 0

Solving
12 + -50x2 = 0

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + -50x2 = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -50x2 = 0 + -12
-50x2 = 0 + -12

Combine like terms: 0 + -12 = -12
-50x2 = -12

Divide each side by '-50'.
x2 = 0.24

Simplifying
x2 = 0.24

Take the square root of each side:
x = {-0.489897949, 0.489897949}