(2x)x-3=16

Solution for (2x)x-3=16 equation:

Simplifying
(2x) * x + -3 = 16

Remove parenthesis around (2x)
2x * x + -3 = 16

Multiply x * x
2x2 + -3 = 16

Reorder the terms:
-3 + 2x2 = 16

Solving
-3 + 2x2 = 16

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 2x2 = 16 + 3

Combine like terms: -3 + 3 = 0
0 + 2x2 = 16 + 3
2x2 = 16 + 3

Combine like terms: 16 + 3 = 19
2x2 = 19

Divide each side by '2'.
x2 = 9.5

Simplifying
x2 = 9.5

Take the square root of each side:
x = {-3.082207001, 3.082207001}