h*h+2.5*2.5=7*7

Solution for h*h+2.5*2.5=7*7 equation:

Simplifying
h * h + 2.5 * 2.5 = 7 * 7

Multiply h * h
h2 + 2.5 * 2.5 = 7 * 7

Multiply 2.5 * 2.5
h2 + 6.25 = 7 * 7

Reorder the terms:
6.25 + h2 = 7 * 7

Multiply 7 * 7
6.25 + h2 = 49

Solving
6.25 + h2 = 49

Solving for variable 'h'.

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

Add '-6.25' to each side of the equation.
6.25 + -6.25 + h2 = 49 + -6.25

Combine like terms: 6.25 + -6.25 = 0.00
0.00 + h2 = 49 + -6.25
h2 = 49 + -6.25

Combine like terms: 49 + -6.25 = 42.75
h2 = 42.75

Simplifying
h2 = 42.75

Take the square root of each side:
h = {-6.538348415, 6.538348415}