j^2-42=144

Solution for j^2-42=144 equation:

Simplifying
j2 + -42 = 144

Reorder the terms:
-42 + j2 = 144

Solving
-42 + j2 = 144

Solving for variable 'j'.

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

Add '42' to each side of the equation.
-42 + 42 + j2 = 144 + 42

Combine like terms: -42 + 42 = 0
0 + j2 = 144 + 42
j2 = 144 + 42

Combine like terms: 144 + 42 = 186
j2 = 186

Simplifying
j2 = 186

Take the square root of each side:
j = {-13.638181697, 13.638181697}