(4x-3)(x-1)=4

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Solution for (4x-3)(x-1)=4 equation:


Simplifying
(4x + -3)(x + -1) = 4

Reorder the terms:
(-3 + 4x)(x + -1) = 4

Reorder the terms:
(-3 + 4x)(-1 + x) = 4

Multiply (-3 + 4x) * (-1 + x)
(-3(-1 + x) + 4x * (-1 + x)) = 4
((-1 * -3 + x * -3) + 4x * (-1 + x)) = 4
((3 + -3x) + 4x * (-1 + x)) = 4
(3 + -3x + (-1 * 4x + x * 4x)) = 4
(3 + -3x + (-4x + 4x2)) = 4

Combine like terms: -3x + -4x = -7x
(3 + -7x + 4x2) = 4

Solving
3 + -7x + 4x2 = 4

Solving for variable 'x'.

Reorder the terms:
3 + -4 + -7x + 4x2 = 4 + -4

Combine like terms: 3 + -4 = -1
-1 + -7x + 4x2 = 4 + -4

Combine like terms: 4 + -4 = 0
-1 + -7x + 4x2 = 0

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

Divide each side by '4'.
-0.25 + -1.75x + x2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + -1.75x + 0.25 + x2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + -1.75x + x2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + -1.75x + x2 = 0 + 0.25
-1.75x + x2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
-1.75x + x2 = 0.25

The x term is -1.75x.  Take half its coefficient (-0.875).
Square it (0.765625) and add it to both sides.

Add '0.765625' to each side of the equation.
-1.75x + 0.765625 + x2 = 0.25 + 0.765625

Reorder the terms:
0.765625 + -1.75x + x2 = 0.25 + 0.765625

Combine like terms: 0.25 + 0.765625 = 1.015625
0.765625 + -1.75x + x2 = 1.015625

Factor a perfect square on the left side:
(x + -0.875)(x + -0.875) = 1.015625

Calculate the square root of the right side: 1.007782219

Break this problem into two subproblems by setting 
(x + -0.875) equal to 1.007782219 and -1.007782219.

Subproblem 1

x + -0.875 = 1.007782219 Simplifying x + -0.875 = 1.007782219 Reorder the terms: -0.875 + x = 1.007782219 Solving -0.875 + x = 1.007782219 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.875' to each side of the equation. -0.875 + 0.875 + x = 1.007782219 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + x = 1.007782219 + 0.875 x = 1.007782219 + 0.875 Combine like terms: 1.007782219 + 0.875 = 1.882782219 x = 1.882782219 Simplifying x = 1.882782219

Subproblem 2

x + -0.875 = -1.007782219 Simplifying x + -0.875 = -1.007782219 Reorder the terms: -0.875 + x = -1.007782219 Solving -0.875 + x = -1.007782219 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.875' to each side of the equation. -0.875 + 0.875 + x = -1.007782219 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + x = -1.007782219 + 0.875 x = -1.007782219 + 0.875 Combine like terms: -1.007782219 + 0.875 = -0.132782219 x = -0.132782219 Simplifying x = -0.132782219

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.882782219, -0.132782219}

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