10x^2-43x=30

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Solution for 10x^2-43x=30 equation:


Simplifying
10x2 + -43x = 30

Reorder the terms:
-43x + 10x2 = 30

Solving
-43x + 10x2 = 30

Solving for variable 'x'.

Reorder the terms:
-30 + -43x + 10x2 = 30 + -30

Combine like terms: 30 + -30 = 0
-30 + -43x + 10x2 = 0

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

Divide each side by '10'.
-3 + -4.3x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -4.3x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + -4.3x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -4.3x + x2 = 0 + 3
-4.3x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
-4.3x + x2 = 3

The x term is -4.3x.  Take half its coefficient (-2.15).
Square it (4.6225) and add it to both sides.

Add '4.6225' to each side of the equation.
-4.3x + 4.6225 + x2 = 3 + 4.6225

Reorder the terms:
4.6225 + -4.3x + x2 = 3 + 4.6225

Combine like terms: 3 + 4.6225 = 7.6225
4.6225 + -4.3x + x2 = 7.6225

Factor a perfect square on the left side:
(x + -2.15)(x + -2.15) = 7.6225

Calculate the square root of the right side: 2.760887538

Break this problem into two subproblems by setting 
(x + -2.15) equal to 2.760887538 and -2.760887538.

Subproblem 1

x + -2.15 = 2.760887538 Simplifying x + -2.15 = 2.760887538 Reorder the terms: -2.15 + x = 2.760887538 Solving -2.15 + x = 2.760887538 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.15' to each side of the equation. -2.15 + 2.15 + x = 2.760887538 + 2.15 Combine like terms: -2.15 + 2.15 = 0.00 0.00 + x = 2.760887538 + 2.15 x = 2.760887538 + 2.15 Combine like terms: 2.760887538 + 2.15 = 4.910887538 x = 4.910887538 Simplifying x = 4.910887538

Subproblem 2

x + -2.15 = -2.760887538 Simplifying x + -2.15 = -2.760887538 Reorder the terms: -2.15 + x = -2.760887538 Solving -2.15 + x = -2.760887538 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.15' to each side of the equation. -2.15 + 2.15 + x = -2.760887538 + 2.15 Combine like terms: -2.15 + 2.15 = 0.00 0.00 + x = -2.760887538 + 2.15 x = -2.760887538 + 2.15 Combine like terms: -2.760887538 + 2.15 = -0.610887538 x = -0.610887538 Simplifying x = -0.610887538

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.910887538, -0.610887538}

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