21x^2-19=0

Solution for 21x^2-19=0 equation:

Simplifying
21x2 + -19 = 0

Reorder the terms:
-19 + 21x2 = 0

Solving
-19 + 21x2 = 0

Solving for variable 'x'.

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

Add '19' to each side of the equation.
-19 + 19 + 21x2 = 0 + 19

Combine like terms: -19 + 19 = 0
0 + 21x2 = 0 + 19
21x2 = 0 + 19

Combine like terms: 0 + 19 = 19
21x2 = 19

Divide each side by '21'.
x2 = 0.9047619048

Simplifying
x2 = 0.9047619048

Take the square root of each side:
x = {-0.951189731, 0.951189731}