5x(x+2)=60

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Solution for 5x(x+2)=60 equation:


Simplifying
5x(x + 2) = 60

Reorder the terms:
5x(2 + x) = 60
(2 * 5x + x * 5x) = 60
(10x + 5x2) = 60

Solving
10x + 5x2 = 60

Solving for variable 'x'.

Reorder the terms:
-60 + 10x + 5x2 = 60 + -60

Combine like terms: 60 + -60 = 0
-60 + 10x + 5x2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(-12 + 2x + x2) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(-12 + 2x + x2)' equal to zero and attempt to solve: Simplifying -12 + 2x + x2 = 0 Solving -12 + 2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '12' to each side of the equation. -12 + 2x + 12 + x2 = 0 + 12 Reorder the terms: -12 + 12 + 2x + x2 = 0 + 12 Combine like terms: -12 + 12 = 0 0 + 2x + x2 = 0 + 12 2x + x2 = 0 + 12 Combine like terms: 0 + 12 = 12 2x + x2 = 12 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 12 + 1 Reorder the terms: 1 + 2x + x2 = 12 + 1 Combine like terms: 12 + 1 = 13 1 + 2x + x2 = 13 Factor a perfect square on the left side: (x + 1)(x + 1) = 13 Calculate the square root of the right side: 3.605551275 Break this problem into two subproblems by setting (x + 1) equal to 3.605551275 and -3.605551275.

Subproblem 1

x + 1 = 3.605551275 Simplifying x + 1 = 3.605551275 Reorder the terms: 1 + x = 3.605551275 Solving 1 + x = 3.605551275 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 3.605551275 + -1 Combine like terms: 1 + -1 = 0 0 + x = 3.605551275 + -1 x = 3.605551275 + -1 Combine like terms: 3.605551275 + -1 = 2.605551275 x = 2.605551275 Simplifying x = 2.605551275

Subproblem 2

x + 1 = -3.605551275 Simplifying x + 1 = -3.605551275 Reorder the terms: 1 + x = -3.605551275 Solving 1 + x = -3.605551275 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -3.605551275 + -1 Combine like terms: 1 + -1 = 0 0 + x = -3.605551275 + -1 x = -3.605551275 + -1 Combine like terms: -3.605551275 + -1 = -4.605551275 x = -4.605551275 Simplifying x = -4.605551275

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.605551275, -4.605551275}

Solution

x = {2.605551275, -4.605551275}

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