23-7(x+3)*5x=10

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Solution for 23-7(x+3)*5x=10 equation:


Simplifying
23 + -7(x + 3) * 5x = 10

Reorder the terms:
23 + -7(3 + x) * 5x = 10

Reorder the terms for easier multiplication:
23 + -7 * 5x(3 + x) = 10

Multiply -7 * 5
23 + -35x(3 + x) = 10
23 + (3 * -35x + x * -35x) = 10
23 + (-105x + -35x2) = 10

Solving
23 + -105x + -35x2 = 10

Solving for variable 'x'.

Reorder the terms:
23 + -10 + -105x + -35x2 = 10 + -10

Combine like terms: 23 + -10 = 13
13 + -105x + -35x2 = 10 + -10

Combine like terms: 10 + -10 = 0
13 + -105x + -35x2 = 0

Begin completing the square.  Divide all terms by
-35 the coefficient of the squared term: 

Divide each side by '-35'.
-0.3714285714 + 3x + x2 = 0

Move the constant term to the right:

Add '0.3714285714' to each side of the equation.
-0.3714285714 + 3x + 0.3714285714 + x2 = 0 + 0.3714285714

Reorder the terms:
-0.3714285714 + 0.3714285714 + 3x + x2 = 0 + 0.3714285714

Combine like terms: -0.3714285714 + 0.3714285714 = 0.0000000000
0.0000000000 + 3x + x2 = 0 + 0.3714285714
3x + x2 = 0 + 0.3714285714

Combine like terms: 0 + 0.3714285714 = 0.3714285714
3x + x2 = 0.3714285714

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 = 0.3714285714 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 0.3714285714 + 2.25

Combine like terms: 0.3714285714 + 2.25 = 2.6214285714
2.25 + 3x + x2 = 2.6214285714

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 2.6214285714

Calculate the square root of the right side: 1.619082633

Break this problem into two subproblems by setting 
(x + 1.5) equal to 1.619082633 and -1.619082633.

Subproblem 1

x + 1.5 = 1.619082633 Simplifying x + 1.5 = 1.619082633 Reorder the terms: 1.5 + x = 1.619082633 Solving 1.5 + x = 1.619082633 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 = 1.619082633 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 1.619082633 + -1.5 x = 1.619082633 + -1.5 Combine like terms: 1.619082633 + -1.5 = 0.119082633 x = 0.119082633 Simplifying x = 0.119082633

Subproblem 2

x + 1.5 = -1.619082633 Simplifying x + 1.5 = -1.619082633 Reorder the terms: 1.5 + x = -1.619082633 Solving 1.5 + x = -1.619082633 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 = -1.619082633 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -1.619082633 + -1.5 x = -1.619082633 + -1.5 Combine like terms: -1.619082633 + -1.5 = -3.119082633 x = -3.119082633 Simplifying x = -3.119082633

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.119082633, -3.119082633}

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