3*4=x*x-1

Solution for 3*4=x*x-1 equation:

Simplifying
3 * 4 = x * x + -1

Multiply 3 * 4
12 = x * x + -1

Multiply x * x
12 = x2 + -1

Reorder the terms:
12 = -1 + x2

Solving
12 = -1 + x2

Solving for variable 'x'.

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

Add '-1x2' to each side of the equation.
12 + -1x2 = -1 + x2 + -1x2

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

Add '-12' to each side of the equation.
12 + -12 + -1x2 = -1 + -12

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

Combine like terms: -1 + -12 = -13
-1x2 = -13

Divide each side by '-1'.
x2 = 13

Simplifying
x2 = 13

Take the square root of each side:
x = {-3.605551275, 3.605551275}