(0.7x)(0.15x)=201.25

Solution for (0.7x)(0.15x)=201.25 equation:

Simplifying
(0.7x)(0.15x) = 201.25

Remove parenthesis around (0.7x)
0.7x(0.15x) = 201.25

Remove parenthesis around (0.15x)
0.7x * 0.15x = 201.25

Reorder the terms for easier multiplication:
0.7 * 0.15x * x = 201.25

Multiply 0.7 * 0.15
0.105x * x = 201.25

Multiply x * x
0.105x2 = 201.25

Solving
0.105x2 = 201.25

Solving for variable 'x'.

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

Divide each side by '0.105'.
x2 = 1916.666667

Simplifying
x2 = 1916.666667

Take the square root of each side:
x = {-43.779751792, 43.779751792}