.5(4x)(x-3)=30

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Solution for .5(4x)(x-3)=30 equation:


Simplifying
0.5(4x)(x + -3) = 30

Remove parenthesis around (4x)
0.5 * 4x(x + -3) = 30

Reorder the terms:
0.5 * 4x(-3 + x) = 30

Multiply 0.5 * 4
2x(-3 + x) = 30
(-3 * 2x + x * 2x) = 30
(-6x + 2x2) = 30

Solving
-6x + 2x2 = 30

Solving for variable 'x'.

Reorder the terms:
-30 + -6x + 2x2 = 30 + -30

Combine like terms: 30 + -30 = 0
-30 + -6x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-15 + -3x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-15 + -3x + x2)' equal to zero and attempt to solve: Simplifying -15 + -3x + x2 = 0 Solving -15 + -3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '15' to each side of the equation. -15 + -3x + 15 + x2 = 0 + 15 Reorder the terms: -15 + 15 + -3x + x2 = 0 + 15 Combine like terms: -15 + 15 = 0 0 + -3x + x2 = 0 + 15 -3x + x2 = 0 + 15 Combine like terms: 0 + 15 = 15 -3x + x2 = 15 The x term is -3x. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3x + 2.25 + x2 = 15 + 2.25 Reorder the terms: 2.25 + -3x + x2 = 15 + 2.25 Combine like terms: 15 + 2.25 = 17.25 2.25 + -3x + x2 = 17.25 Factor a perfect square on the left side: (x + -1.5)(x + -1.5) = 17.25 Calculate the square root of the right side: 4.153311931 Break this problem into two subproblems by setting (x + -1.5) equal to 4.153311931 and -4.153311931.

Subproblem 1

x + -1.5 = 4.153311931 Simplifying x + -1.5 = 4.153311931 Reorder the terms: -1.5 + x = 4.153311931 Solving -1.5 + x = 4.153311931 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 4.153311931 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 4.153311931 + 1.5 x = 4.153311931 + 1.5 Combine like terms: 4.153311931 + 1.5 = 5.653311931 x = 5.653311931 Simplifying x = 5.653311931

Subproblem 2

x + -1.5 = -4.153311931 Simplifying x + -1.5 = -4.153311931 Reorder the terms: -1.5 + x = -4.153311931 Solving -1.5 + x = -4.153311931 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -4.153311931 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -4.153311931 + 1.5 x = -4.153311931 + 1.5 Combine like terms: -4.153311931 + 1.5 = -2.653311931 x = -2.653311931 Simplifying x = -2.653311931

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.653311931, -2.653311931}

Solution

x = {5.653311931, -2.653311931}

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