3=x^2-4+7

Solution for 3=x^2-4+7 equation:

Simplifying
3 = x2 + -4 + 7

Reorder the terms:
3 = -4 + 7 + x2

Combine like terms: -4 + 7 = 3
3 = 3 + x2

Add '-3' to each side of the equation.
3 + -3 = 3 + -3 + x2

Combine like terms: 3 + -3 = 0
0 = 3 + -3 + x2

Combine like terms: 3 + -3 = 0
0 = 0 + x2
0 = x2

Solving
0 = 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.
0 + -1x2 = x2 + -1x2
Remove the zero:
-1x2 = x2 + -1x2

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

Divide each side by '-1'.
x2 = 0

Simplifying
x2 = 0

Take the square root of each side:
x = {0}