(7.6-2x)(7.6-2x)=0

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Solution for (7.6-2x)(7.6-2x)=0 equation:


Simplifying
(7.6 + -2x)(7.6 + -2x) = 0

Multiply (7.6 + -2x) * (7.6 + -2x)
(7.6(7.6 + -2x) + -2x * (7.6 + -2x)) = 0
((7.6 * 7.6 + -2x * 7.6) + -2x * (7.6 + -2x)) = 0
((57.76 + -15.2x) + -2x * (7.6 + -2x)) = 0
(57.76 + -15.2x + (7.6 * -2x + -2x * -2x)) = 0
(57.76 + -15.2x + (-15.2x + 4x2)) = 0

Combine like terms: -15.2x + -15.2x = -30.4x
(57.76 + -30.4x + 4x2) = 0

Solving
57.76 + -30.4x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
14.44 + -7.6x + x2 = 0

Move the constant term to the right:

Add '-14.44' to each side of the equation.
14.44 + -7.6x + -14.44 + x2 = 0 + -14.44

Reorder the terms:
14.44 + -14.44 + -7.6x + x2 = 0 + -14.44

Combine like terms: 14.44 + -14.44 = 0.00
0.00 + -7.6x + x2 = 0 + -14.44
-7.6x + x2 = 0 + -14.44

Combine like terms: 0 + -14.44 = -14.44
-7.6x + x2 = -14.44

The x term is -7.6x.  Take half its coefficient (-3.8).
Square it (14.44) and add it to both sides.

Add '14.44' to each side of the equation.
-7.6x + 14.44 + x2 = -14.44 + 14.44

Reorder the terms:
14.44 + -7.6x + x2 = -14.44 + 14.44

Combine like terms: -14.44 + 14.44 = 0.00
14.44 + -7.6x + x2 = 0.00

Factor a perfect square on the left side:
(x + -3.8)(x + -3.8) = 0.00

Calculate the square root of the right side: 0.00

Break this problem into two subproblems by setting 
(x + -3.8) equal to 0.00 and 0.00.

Subproblem 1

x + -3.8 = 0.00 Simplifying x + -3.8 = 0.00 Reorder the terms: -3.8 + x = 0.00 Solving -3.8 + x = 0.00 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.8' to each side of the equation. -3.8 + 3.8 + x = 0.00 + 3.8 Combine like terms: -3.8 + 3.8 = 0.0 0.0 + x = 0.00 + 3.8 x = 0.00 + 3.8 Combine like terms: 0.00 + 3.8 = 3.8 x = 3.8 Simplifying x = 3.8

Subproblem 2

x + -3.8 = 0.00 Simplifying x + -3.8 = 0.00 Reorder the terms: -3.8 + x = 0.00 Solving -3.8 + x = 0.00 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.8' to each side of the equation. -3.8 + 3.8 + x = 0.00 + 3.8 Combine like terms: -3.8 + 3.8 = 0.0 0.0 + x = 0.00 + 3.8 x = 0.00 + 3.8 Combine like terms: 0.00 + 3.8 = 3.8 x = 3.8 Simplifying x = 3.8

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.8, 3.8}

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