21x^2-12+1=0

Solution for 21x^2-12+1=0 equation:

Simplifying
21x2 + -12 + 1 = 0

Reorder the terms:
-12 + 1 + 21x2 = 0

Combine like terms: -12 + 1 = -11
-11 + 21x2 = 0

Solving
-11 + 21x2 = 0

Solving for variable 'x'.

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

Add '11' to each side of the equation.
-11 + 11 + 21x2 = 0 + 11

Combine like terms: -11 + 11 = 0
0 + 21x2 = 0 + 11
21x2 = 0 + 11

Combine like terms: 0 + 11 = 11
21x2 = 11

Divide each side by '21'.
x2 = 0.5238095238

Simplifying
x2 = 0.5238095238

Take the square root of each side:
x = {-0.723746864, 0.723746864}