5x^2+7x-60=0

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Solution for 5x^2+7x-60=0 equation:


Simplifying
5x2 + 7x + -60 = 0

Reorder the terms:
-60 + 7x + 5x2 = 0

Solving
-60 + 7x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-12 + 1.4x + x2 = 0

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + 1.4x + 12 + x2 = 0 + 12

Reorder the terms:
-12 + 12 + 1.4x + x2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 1.4x + x2 = 0 + 12
1.4x + x2 = 0 + 12

Combine like terms: 0 + 12 = 12
1.4x + x2 = 12

The x term is 1.4x.  Take half its coefficient (0.7).
Square it (0.49) and add it to both sides.

Add '0.49' to each side of the equation.
1.4x + 0.49 + x2 = 12 + 0.49

Reorder the terms:
0.49 + 1.4x + x2 = 12 + 0.49

Combine like terms: 12 + 0.49 = 12.49
0.49 + 1.4x + x2 = 12.49

Factor a perfect square on the left side:
(x + 0.7)(x + 0.7) = 12.49

Calculate the square root of the right side: 3.534119409

Break this problem into two subproblems by setting 
(x + 0.7) equal to 3.534119409 and -3.534119409.

Subproblem 1

x + 0.7 = 3.534119409 Simplifying x + 0.7 = 3.534119409 Reorder the terms: 0.7 + x = 3.534119409 Solving 0.7 + x = 3.534119409 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7' to each side of the equation. 0.7 + -0.7 + x = 3.534119409 + -0.7 Combine like terms: 0.7 + -0.7 = 0.0 0.0 + x = 3.534119409 + -0.7 x = 3.534119409 + -0.7 Combine like terms: 3.534119409 + -0.7 = 2.834119409 x = 2.834119409 Simplifying x = 2.834119409

Subproblem 2

x + 0.7 = -3.534119409 Simplifying x + 0.7 = -3.534119409 Reorder the terms: 0.7 + x = -3.534119409 Solving 0.7 + x = -3.534119409 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7' to each side of the equation. 0.7 + -0.7 + x = -3.534119409 + -0.7 Combine like terms: 0.7 + -0.7 = 0.0 0.0 + x = -3.534119409 + -0.7 x = -3.534119409 + -0.7 Combine like terms: -3.534119409 + -0.7 = -4.234119409 x = -4.234119409 Simplifying x = -4.234119409

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.834119409, -4.234119409}

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