2x^2+7-40=0

Solution for 2x^2+7-40=0 equation:

Simplifying
2x2 + 7 + -40 = 0

Reorder the terms:
7 + -40 + 2x2 = 0

Combine like terms: 7 + -40 = -33
-33 + 2x2 = 0

Solving
-33 + 2x2 = 0

Solving for variable 'x'.

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

Add '33' to each side of the equation.
-33 + 33 + 2x2 = 0 + 33

Combine like terms: -33 + 33 = 0
0 + 2x2 = 0 + 33
2x2 = 0 + 33

Combine like terms: 0 + 33 = 33
2x2 = 33

Divide each side by '2'.
x2 = 16.5

Simplifying
x2 = 16.5

Take the square root of each side:
x = {-4.062019202, 4.062019202}