10x^2+60x=89

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Solution for 10x^2+60x=89 equation:


Simplifying
10x2 + 60x = 89

Reorder the terms:
60x + 10x2 = 89

Solving
60x + 10x2 = 89

Solving for variable 'x'.

Reorder the terms:
-89 + 60x + 10x2 = 89 + -89

Combine like terms: 89 + -89 = 0
-89 + 60x + 10x2 = 0

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

Divide each side by '10'.
-8.9 + 6x + x2 = 0

Move the constant term to the right:

Add '8.9' to each side of the equation.
-8.9 + 6x + 8.9 + x2 = 0 + 8.9

Reorder the terms:
-8.9 + 8.9 + 6x + x2 = 0 + 8.9

Combine like terms: -8.9 + 8.9 = 0.0
0.0 + 6x + x2 = 0 + 8.9
6x + x2 = 0 + 8.9

Combine like terms: 0 + 8.9 = 8.9
6x + x2 = 8.9

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = 8.9 + 9

Reorder the terms:
9 + 6x + x2 = 8.9 + 9

Combine like terms: 8.9 + 9 = 17.9
9 + 6x + x2 = 17.9

Factor a perfect square on the left side:
(x + 3)(x + 3) = 17.9

Calculate the square root of the right side: 4.23083916

Break this problem into two subproblems by setting 
(x + 3) equal to 4.23083916 and -4.23083916.

Subproblem 1

x + 3 = 4.23083916 Simplifying x + 3 = 4.23083916 Reorder the terms: 3 + x = 4.23083916 Solving 3 + x = 4.23083916 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 4.23083916 + -3 Combine like terms: 3 + -3 = 0 0 + x = 4.23083916 + -3 x = 4.23083916 + -3 Combine like terms: 4.23083916 + -3 = 1.23083916 x = 1.23083916 Simplifying x = 1.23083916

Subproblem 2

x + 3 = -4.23083916 Simplifying x + 3 = -4.23083916 Reorder the terms: 3 + x = -4.23083916 Solving 3 + x = -4.23083916 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -4.23083916 + -3 Combine like terms: 3 + -3 = 0 0 + x = -4.23083916 + -3 x = -4.23083916 + -3 Combine like terms: -4.23083916 + -3 = -7.23083916 x = -7.23083916 Simplifying x = -7.23083916

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.23083916, -7.23083916}

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