4.9x^2+5x-60=0

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Solution for 4.9x^2+5x-60=0 equation:


Simplifying
4.9x2 + 5x + -60 = 0

Reorder the terms:
-60 + 5x + 4.9x2 = 0

Solving
-60 + 5x + 4.9x2 = 0

Solving for variable 'x'.

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

Divide each side by '4.9'.
-12.24489796 + 1.020408163x + x2 = 0

Move the constant term to the right:

Add '12.24489796' to each side of the equation.
-12.24489796 + 1.020408163x + 12.24489796 + x2 = 0 + 12.24489796

Reorder the terms:
-12.24489796 + 12.24489796 + 1.020408163x + x2 = 0 + 12.24489796

Combine like terms: -12.24489796 + 12.24489796 = 0.00000000
0.00000000 + 1.020408163x + x2 = 0 + 12.24489796
1.020408163x + x2 = 0 + 12.24489796

Combine like terms: 0 + 12.24489796 = 12.24489796
1.020408163x + x2 = 12.24489796

The x term is 1.020408163x.  Take half its coefficient (0.5102040815).
Square it (0.2603082048) and add it to both sides.

Add '0.2603082048' to each side of the equation.
1.020408163x + 0.2603082048 + x2 = 12.24489796 + 0.2603082048

Reorder the terms:
0.2603082048 + 1.020408163x + x2 = 12.24489796 + 0.2603082048

Combine like terms: 12.24489796 + 0.2603082048 = 12.5052061648
0.2603082048 + 1.020408163x + x2 = 12.5052061648

Factor a perfect square on the left side:
(x + 0.5102040815)(x + 0.5102040815) = 12.5052061648

Calculate the square root of the right side: 3.536270092

Break this problem into two subproblems by setting 
(x + 0.5102040815) equal to 3.536270092 and -3.536270092.

Subproblem 1

x + 0.5102040815 = 3.536270092 Simplifying x + 0.5102040815 = 3.536270092 Reorder the terms: 0.5102040815 + x = 3.536270092 Solving 0.5102040815 + x = 3.536270092 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5102040815' to each side of the equation. 0.5102040815 + -0.5102040815 + x = 3.536270092 + -0.5102040815 Combine like terms: 0.5102040815 + -0.5102040815 = 0.0000000000 0.0000000000 + x = 3.536270092 + -0.5102040815 x = 3.536270092 + -0.5102040815 Combine like terms: 3.536270092 + -0.5102040815 = 3.0260660105 x = 3.0260660105 Simplifying x = 3.0260660105

Subproblem 2

x + 0.5102040815 = -3.536270092 Simplifying x + 0.5102040815 = -3.536270092 Reorder the terms: 0.5102040815 + x = -3.536270092 Solving 0.5102040815 + x = -3.536270092 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5102040815' to each side of the equation. 0.5102040815 + -0.5102040815 + x = -3.536270092 + -0.5102040815 Combine like terms: 0.5102040815 + -0.5102040815 = 0.0000000000 0.0000000000 + x = -3.536270092 + -0.5102040815 x = -3.536270092 + -0.5102040815 Combine like terms: -3.536270092 + -0.5102040815 = -4.0464741735 x = -4.0464741735 Simplifying x = -4.0464741735

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.0260660105, -4.0464741735}

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