2d^2-13-7=0

Solution for 2d^2-13-7=0 equation:

Simplifying
2d2 + -13 + -7 = 0

Reorder the terms:
-13 + -7 + 2d2 = 0

Combine like terms: -13 + -7 = -20
-20 + 2d2 = 0

Solving
-20 + 2d2 = 0

Solving for variable 'd'.

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

Add '20' to each side of the equation.
-20 + 20 + 2d2 = 0 + 20

Combine like terms: -20 + 20 = 0
0 + 2d2 = 0 + 20
2d2 = 0 + 20

Combine like terms: 0 + 20 = 20
2d2 = 20

Divide each side by '2'.
d2 = 10

Simplifying
d2 = 10

Take the square root of each side:
d = {-3.16227766, 3.16227766}