6x^2-25+21=0

Solution for 6x^2-25+21=0 equation:

Simplifying
6x2 + -25 + 21 = 0

Reorder the terms:
-25 + 21 + 6x2 = 0

Combine like terms: -25 + 21 = -4
-4 + 6x2 = 0

Solving
-4 + 6x2 = 0

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 + 6x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 6x2 = 0 + 4
6x2 = 0 + 4

Combine like terms: 0 + 4 = 4
6x2 = 4

Divide each side by '6'.
x2 = 0.6666666667

Simplifying
x2 = 0.6666666667

Take the square root of each side:
x = {-0.816496581, 0.816496581}