3x(2x-10)=2(4x-5)

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Solution for 3x(2x-10)=2(4x-5) equation:


Simplifying
3x(2x + -10) = 2(4x + -5)

Reorder the terms:
3x(-10 + 2x) = 2(4x + -5)
(-10 * 3x + 2x * 3x) = 2(4x + -5)
(-30x + 6x2) = 2(4x + -5)

Reorder the terms:
-30x + 6x2 = 2(-5 + 4x)
-30x + 6x2 = (-5 * 2 + 4x * 2)
-30x + 6x2 = (-10 + 8x)

Solving
-30x + 6x2 = -10 + 8x

Solving for variable 'x'.

Reorder the terms:
10 + -30x + -8x + 6x2 = -10 + 8x + 10 + -8x

Combine like terms: -30x + -8x = -38x
10 + -38x + 6x2 = -10 + 8x + 10 + -8x

Reorder the terms:
10 + -38x + 6x2 = -10 + 10 + 8x + -8x

Combine like terms: -10 + 10 = 0
10 + -38x + 6x2 = 0 + 8x + -8x
10 + -38x + 6x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
10 + -38x + 6x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(5 + -19x + 3x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(5 + -19x + 3x2)' equal to zero and attempt to solve: Simplifying 5 + -19x + 3x2 = 0 Solving 5 + -19x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 1.666666667 + -6.333333333x + x2 = 0 Move the constant term to the right: Add '-1.666666667' to each side of the equation. 1.666666667 + -6.333333333x + -1.666666667 + x2 = 0 + -1.666666667 Reorder the terms: 1.666666667 + -1.666666667 + -6.333333333x + x2 = 0 + -1.666666667 Combine like terms: 1.666666667 + -1.666666667 = 0.000000000 0.000000000 + -6.333333333x + x2 = 0 + -1.666666667 -6.333333333x + x2 = 0 + -1.666666667 Combine like terms: 0 + -1.666666667 = -1.666666667 -6.333333333x + x2 = -1.666666667 The x term is -6.333333333x. Take half its coefficient (-3.166666667). Square it (10.02777778) and add it to both sides. Add '10.02777778' to each side of the equation. -6.333333333x + 10.02777778 + x2 = -1.666666667 + 10.02777778 Reorder the terms: 10.02777778 + -6.333333333x + x2 = -1.666666667 + 10.02777778 Combine like terms: -1.666666667 + 10.02777778 = 8.361111113 10.02777778 + -6.333333333x + x2 = 8.361111113 Factor a perfect square on the left side: (x + -3.166666667)(x + -3.166666667) = 8.361111113 Calculate the square root of the right side: 2.891558596 Break this problem into two subproblems by setting (x + -3.166666667) equal to 2.891558596 and -2.891558596.

Subproblem 1

x + -3.166666667 = 2.891558596 Simplifying x + -3.166666667 = 2.891558596 Reorder the terms: -3.166666667 + x = 2.891558596 Solving -3.166666667 + x = 2.891558596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.166666667' to each side of the equation. -3.166666667 + 3.166666667 + x = 2.891558596 + 3.166666667 Combine like terms: -3.166666667 + 3.166666667 = 0.000000000 0.000000000 + x = 2.891558596 + 3.166666667 x = 2.891558596 + 3.166666667 Combine like terms: 2.891558596 + 3.166666667 = 6.058225263 x = 6.058225263 Simplifying x = 6.058225263

Subproblem 2

x + -3.166666667 = -2.891558596 Simplifying x + -3.166666667 = -2.891558596 Reorder the terms: -3.166666667 + x = -2.891558596 Solving -3.166666667 + x = -2.891558596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.166666667' to each side of the equation. -3.166666667 + 3.166666667 + x = -2.891558596 + 3.166666667 Combine like terms: -3.166666667 + 3.166666667 = 0.000000000 0.000000000 + x = -2.891558596 + 3.166666667 x = -2.891558596 + 3.166666667 Combine like terms: -2.891558596 + 3.166666667 = 0.275108071 x = 0.275108071 Simplifying x = 0.275108071

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.058225263, 0.275108071}

Solution

x = {6.058225263, 0.275108071}

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