(4x-7)*(x-9)=6x

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Solution for (4x-7)*(x-9)=6x equation:


Simplifying
(4x + -7)(x + -9) = 6x

Reorder the terms:
(-7 + 4x)(x + -9) = 6x

Reorder the terms:
(-7 + 4x)(-9 + x) = 6x

Multiply (-7 + 4x) * (-9 + x)
(-7(-9 + x) + 4x * (-9 + x)) = 6x
((-9 * -7 + x * -7) + 4x * (-9 + x)) = 6x
((63 + -7x) + 4x * (-9 + x)) = 6x
(63 + -7x + (-9 * 4x + x * 4x)) = 6x
(63 + -7x + (-36x + 4x2)) = 6x

Combine like terms: -7x + -36x = -43x
(63 + -43x + 4x2) = 6x

Solving
63 + -43x + 4x2 = 6x

Solving for variable 'x'.

Reorder the terms:
63 + -43x + -6x + 4x2 = 6x + -6x

Combine like terms: -43x + -6x = -49x
63 + -49x + 4x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
63 + -49x + 4x2 = 0

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

Divide each side by '4'.
15.75 + -12.25x + x2 = 0

Move the constant term to the right:

Add '-15.75' to each side of the equation.
15.75 + -12.25x + -15.75 + x2 = 0 + -15.75

Reorder the terms:
15.75 + -15.75 + -12.25x + x2 = 0 + -15.75

Combine like terms: 15.75 + -15.75 = 0.00
0.00 + -12.25x + x2 = 0 + -15.75
-12.25x + x2 = 0 + -15.75

Combine like terms: 0 + -15.75 = -15.75
-12.25x + x2 = -15.75

The x term is -12.25x.  Take half its coefficient (-6.125).
Square it (37.515625) and add it to both sides.

Add '37.515625' to each side of the equation.
-12.25x + 37.515625 + x2 = -15.75 + 37.515625

Reorder the terms:
37.515625 + -12.25x + x2 = -15.75 + 37.515625

Combine like terms: -15.75 + 37.515625 = 21.765625
37.515625 + -12.25x + x2 = 21.765625

Factor a perfect square on the left side:
(x + -6.125)(x + -6.125) = 21.765625

Calculate the square root of the right side: 4.665364402

Break this problem into two subproblems by setting 
(x + -6.125) equal to 4.665364402 and -4.665364402.

Subproblem 1

x + -6.125 = 4.665364402 Simplifying x + -6.125 = 4.665364402 Reorder the terms: -6.125 + x = 4.665364402 Solving -6.125 + x = 4.665364402 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.125' to each side of the equation. -6.125 + 6.125 + x = 4.665364402 + 6.125 Combine like terms: -6.125 + 6.125 = 0.000 0.000 + x = 4.665364402 + 6.125 x = 4.665364402 + 6.125 Combine like terms: 4.665364402 + 6.125 = 10.790364402 x = 10.790364402 Simplifying x = 10.790364402

Subproblem 2

x + -6.125 = -4.665364402 Simplifying x + -6.125 = -4.665364402 Reorder the terms: -6.125 + x = -4.665364402 Solving -6.125 + x = -4.665364402 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.125' to each side of the equation. -6.125 + 6.125 + x = -4.665364402 + 6.125 Combine like terms: -6.125 + 6.125 = 0.000 0.000 + x = -4.665364402 + 6.125 x = -4.665364402 + 6.125 Combine like terms: -4.665364402 + 6.125 = 1.459635598 x = 1.459635598 Simplifying x = 1.459635598

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.790364402, 1.459635598}

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