(x^2+1)-5=21

Solution for (x^2+1)-5=21 equation:

Simplifying
(x2 + 1) + -5 = 21

Reorder the terms:
(1 + x2) + -5 = 21

Remove parenthesis around (1 + x2)
1 + x2 + -5 = 21

Reorder the terms:
1 + -5 + x2 = 21

Combine like terms: 1 + -5 = -4
-4 + x2 = 21

Solving
-4 + x2 = 21

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 + x2 = 21 + 4

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

Combine like terms: 21 + 4 = 25
x2 = 25

Simplifying
x2 = 25

Take the square root of each side:
x = {-5, 5}