x^2-8p-42=0

Solution for x^2-8p-42=0 equation:

Simplifying
x2 + -8p + -42 = 0

Reorder the terms:
-42 + -8p + x2 = 0

Solving
-42 + -8p + x2 = 0

Solving for variable 'p'.

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

Add '42' to each side of the equation.
-42 + -8p + 42 + x2 = 0 + 42

Reorder the terms:
-42 + 42 + -8p + x2 = 0 + 42

Combine like terms: -42 + 42 = 0
0 + -8p + x2 = 0 + 42
-8p + x2 = 0 + 42

Combine like terms: 0 + 42 = 42
-8p + x2 = 42

Add '-1x2' to each side of the equation.
-8p + x2 + -1x2 = 42 + -1x2

Combine like terms: x2 + -1x2 = 0
-8p + 0 = 42 + -1x2
-8p = 42 + -1x2

Divide each side by '-8'.
p = -5.25 + 0.125x2

Simplifying
p = -5.25 + 0.125x2