4x^2=(0.25-x)(0.25-x)(7.0)

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Solution for 4x^2=(0.25-x)(0.25-x)(7.0) equation:


Simplifying
4x2 = (0.25 + -1x)(0.25 + -1x)(7.0)

Reorder the terms for easier multiplication:
4x2 = 7.0(0.25 + -1x)(0.25 + -1x)

Multiply (0.25 + -1x) * (0.25 + -1x)
4x2 = 7.0(0.25(0.25 + -1x) + -1x * (0.25 + -1x))
4x2 = 7.0((0.25 * 0.25 + -1x * 0.25) + -1x * (0.25 + -1x))
4x2 = 7.0((0.0625 + -0.25x) + -1x * (0.25 + -1x))
4x2 = 7.0(0.0625 + -0.25x + (0.25 * -1x + -1x * -1x))
4x2 = 7.0(0.0625 + -0.25x + (-0.25x + 1x2))

Combine like terms: -0.25x + -0.25x = -0.5x
4x2 = 7.0(0.0625 + -0.5x + 1x2)
4x2 = (0.0625 * 7.0 + -0.5x * 7.0 + 1x2 * 7.0)
4x2 = (0.4375 + -3.5x + 7x2)

Solving
4x2 = 0.4375 + -3.5x + 7x2

Solving for variable 'x'.

Reorder the terms:
-0.4375 + 3.5x + 4x2 + -7x2 = 0.4375 + -3.5x + 7x2 + -0.4375 + 3.5x + -7x2

Combine like terms: 4x2 + -7x2 = -3x2
-0.4375 + 3.5x + -3x2 = 0.4375 + -3.5x + 7x2 + -0.4375 + 3.5x + -7x2

Reorder the terms:
-0.4375 + 3.5x + -3x2 = 0.4375 + -0.4375 + -3.5x + 3.5x + 7x2 + -7x2

Combine like terms: 0.4375 + -0.4375 = 0.0000
-0.4375 + 3.5x + -3x2 = 0.0000 + -3.5x + 3.5x + 7x2 + -7x2
-0.4375 + 3.5x + -3x2 = -3.5x + 3.5x + 7x2 + -7x2

Combine like terms: -3.5x + 3.5x = 0.0
-0.4375 + 3.5x + -3x2 = 0.0 + 7x2 + -7x2
-0.4375 + 3.5x + -3x2 = 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
-0.4375 + 3.5x + -3x2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
0.1458333333 + -1.166666667x + x2 = 0

Move the constant term to the right:

Add '-0.1458333333' to each side of the equation.
0.1458333333 + -1.166666667x + -0.1458333333 + x2 = 0 + -0.1458333333

Reorder the terms:
0.1458333333 + -0.1458333333 + -1.166666667x + x2 = 0 + -0.1458333333

Combine like terms: 0.1458333333 + -0.1458333333 = 0.0000000000
0.0000000000 + -1.166666667x + x2 = 0 + -0.1458333333
-1.166666667x + x2 = 0 + -0.1458333333

Combine like terms: 0 + -0.1458333333 = -0.1458333333
-1.166666667x + x2 = -0.1458333333

The x term is -1.166666667x.  Take half its coefficient (-0.5833333335).
Square it (0.3402777780) and add it to both sides.

Add '0.3402777780' to each side of the equation.
-1.166666667x + 0.3402777780 + x2 = -0.1458333333 + 0.3402777780

Reorder the terms:
0.3402777780 + -1.166666667x + x2 = -0.1458333333 + 0.3402777780

Combine like terms: -0.1458333333 + 0.3402777780 = 0.1944444447
0.3402777780 + -1.166666667x + x2 = 0.1944444447

Factor a perfect square on the left side:
(x + -0.5833333335)(x + -0.5833333335) = 0.1944444447

Calculate the square root of the right side: 0.440958552

Break this problem into two subproblems by setting 
(x + -0.5833333335) equal to 0.440958552 and -0.440958552.

Subproblem 1

x + -0.5833333335 = 0.440958552 Simplifying x + -0.5833333335 = 0.440958552 Reorder the terms: -0.5833333335 + x = 0.440958552 Solving -0.5833333335 + x = 0.440958552 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5833333335' to each side of the equation. -0.5833333335 + 0.5833333335 + x = 0.440958552 + 0.5833333335 Combine like terms: -0.5833333335 + 0.5833333335 = 0.0000000000 0.0000000000 + x = 0.440958552 + 0.5833333335 x = 0.440958552 + 0.5833333335 Combine like terms: 0.440958552 + 0.5833333335 = 1.0242918855 x = 1.0242918855 Simplifying x = 1.0242918855

Subproblem 2

x + -0.5833333335 = -0.440958552 Simplifying x + -0.5833333335 = -0.440958552 Reorder the terms: -0.5833333335 + x = -0.440958552 Solving -0.5833333335 + x = -0.440958552 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5833333335' to each side of the equation. -0.5833333335 + 0.5833333335 + x = -0.440958552 + 0.5833333335 Combine like terms: -0.5833333335 + 0.5833333335 = 0.0000000000 0.0000000000 + x = -0.440958552 + 0.5833333335 x = -0.440958552 + 0.5833333335 Combine like terms: -0.440958552 + 0.5833333335 = 0.1423747815 x = 0.1423747815 Simplifying x = 0.1423747815

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.0242918855, 0.1423747815}

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