2*x*x-98=0

Solution for 2*x*x-98=0 equation:

Simplifying
2x * x + -98 = 0

Multiply x * x
2x2 + -98 = 0

Reorder the terms:
-98 + 2x2 = 0

Solving
-98 + 2x2 = 0

Solving for variable 'x'.

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

Add '98' to each side of the equation.
-98 + 98 + 2x2 = 0 + 98

Combine like terms: -98 + 98 = 0
0 + 2x2 = 0 + 98
2x2 = 0 + 98

Combine like terms: 0 + 98 = 98
2x2 = 98

Divide each side by '2'.
x2 = 49

Simplifying
x2 = 49

Take the square root of each side:
x = {-7, 7}