6*6+19*19=d^2

Solution for 6*6+19*19=d^2 equation:

Simplifying
6 * 6 + 19 * 19 = d2

Multiply 6 * 6
36 + 19 * 19 = d2

Multiply 19 * 19
36 + 361 = d2

Combine like terms: 36 + 361 = 397
397 = d2

Solving
397 = d2

Solving for variable 'd'.

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

Add '-1d2' to each side of the equation.
397 + -1d2 = d2 + -1d2

Combine like terms: d2 + -1d2 = 0
397 + -1d2 = 0

Add '-397' to each side of the equation.
397 + -397 + -1d2 = 0 + -397

Combine like terms: 397 + -397 = 0
0 + -1d2 = 0 + -397
-1d2 = 0 + -397

Combine like terms: 0 + -397 = -397
-1d2 = -397

Divide each side by '-1'.
d2 = 397

Simplifying
d2 = 397

Take the square root of each side:
d = {-19.924858845, 19.924858845}