(4x+20)(2x+60)=180

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Solution for (4x+20)(2x+60)=180 equation:


Simplifying
(4x + 20)(2x + 60) = 180

Reorder the terms:
(20 + 4x)(2x + 60) = 180

Reorder the terms:
(20 + 4x)(60 + 2x) = 180

Multiply (20 + 4x) * (60 + 2x)
(20(60 + 2x) + 4x * (60 + 2x)) = 180
((60 * 20 + 2x * 20) + 4x * (60 + 2x)) = 180
((1200 + 40x) + 4x * (60 + 2x)) = 180
(1200 + 40x + (60 * 4x + 2x * 4x)) = 180
(1200 + 40x + (240x + 8x2)) = 180

Combine like terms: 40x + 240x = 280x
(1200 + 280x + 8x2) = 180

Solving
1200 + 280x + 8x2 = 180

Solving for variable 'x'.

Reorder the terms:
1200 + -180 + 280x + 8x2 = 180 + -180

Combine like terms: 1200 + -180 = 1020
1020 + 280x + 8x2 = 180 + -180

Combine like terms: 180 + -180 = 0
1020 + 280x + 8x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(255 + 70x + 2x2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(255 + 70x + 2x2)' equal to zero and attempt to solve: Simplifying 255 + 70x + 2x2 = 0 Solving 255 + 70x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 127.5 + 35x + x2 = 0 Move the constant term to the right: Add '-127.5' to each side of the equation. 127.5 + 35x + -127.5 + x2 = 0 + -127.5 Reorder the terms: 127.5 + -127.5 + 35x + x2 = 0 + -127.5 Combine like terms: 127.5 + -127.5 = 0.0 0.0 + 35x + x2 = 0 + -127.5 35x + x2 = 0 + -127.5 Combine like terms: 0 + -127.5 = -127.5 35x + x2 = -127.5 The x term is 35x. Take half its coefficient (17.5). Square it (306.25) and add it to both sides. Add '306.25' to each side of the equation. 35x + 306.25 + x2 = -127.5 + 306.25 Reorder the terms: 306.25 + 35x + x2 = -127.5 + 306.25 Combine like terms: -127.5 + 306.25 = 178.75 306.25 + 35x + x2 = 178.75 Factor a perfect square on the left side: (x + 17.5)(x + 17.5) = 178.75 Calculate the square root of the right side: 13.369741957 Break this problem into two subproblems by setting (x + 17.5) equal to 13.369741957 and -13.369741957.

Subproblem 1

x + 17.5 = 13.369741957 Simplifying x + 17.5 = 13.369741957 Reorder the terms: 17.5 + x = 13.369741957 Solving 17.5 + x = 13.369741957 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-17.5' to each side of the equation. 17.5 + -17.5 + x = 13.369741957 + -17.5 Combine like terms: 17.5 + -17.5 = 0.0 0.0 + x = 13.369741957 + -17.5 x = 13.369741957 + -17.5 Combine like terms: 13.369741957 + -17.5 = -4.130258043 x = -4.130258043 Simplifying x = -4.130258043

Subproblem 2

x + 17.5 = -13.369741957 Simplifying x + 17.5 = -13.369741957 Reorder the terms: 17.5 + x = -13.369741957 Solving 17.5 + x = -13.369741957 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-17.5' to each side of the equation. 17.5 + -17.5 + x = -13.369741957 + -17.5 Combine like terms: 17.5 + -17.5 = 0.0 0.0 + x = -13.369741957 + -17.5 x = -13.369741957 + -17.5 Combine like terms: -13.369741957 + -17.5 = -30.869741957 x = -30.869741957 Simplifying x = -30.869741957

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-4.130258043, -30.869741957}

Solution

x = {-4.130258043, -30.869741957}

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