4.9x^2+10x-60=0

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Solution for 4.9x^2+10x-60=0 equation:


Simplifying
4.9x2 + 10x + -60 = 0

Reorder the terms:
-60 + 10x + 4.9x2 = 0

Solving
-60 + 10x + 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 + 2.040816327x + x2 = 0

Move the constant term to the right:

Add '12.24489796' to each side of the equation.
-12.24489796 + 2.040816327x + 12.24489796 + x2 = 0 + 12.24489796

Reorder the terms:
-12.24489796 + 12.24489796 + 2.040816327x + x2 = 0 + 12.24489796

Combine like terms: -12.24489796 + 12.24489796 = 0.00000000
0.00000000 + 2.040816327x + x2 = 0 + 12.24489796
2.040816327x + x2 = 0 + 12.24489796

Combine like terms: 0 + 12.24489796 = 12.24489796
2.040816327x + x2 = 12.24489796

The x term is 2.040816327x.  Take half its coefficient (1.020408164).
Square it (1.041232821) and add it to both sides.

Add '1.041232821' to each side of the equation.
2.040816327x + 1.041232821 + x2 = 12.24489796 + 1.041232821

Reorder the terms:
1.041232821 + 2.040816327x + x2 = 12.24489796 + 1.041232821

Combine like terms: 12.24489796 + 1.041232821 = 13.286130781
1.041232821 + 2.040816327x + x2 = 13.286130781

Factor a perfect square on the left side:
(x + 1.020408164)(x + 1.020408164) = 13.286130781

Calculate the square root of the right side: 3.64501451

Break this problem into two subproblems by setting 
(x + 1.020408164) equal to 3.64501451 and -3.64501451.

Subproblem 1

x + 1.020408164 = 3.64501451 Simplifying x + 1.020408164 = 3.64501451 Reorder the terms: 1.020408164 + x = 3.64501451 Solving 1.020408164 + x = 3.64501451 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.020408164' to each side of the equation. 1.020408164 + -1.020408164 + x = 3.64501451 + -1.020408164 Combine like terms: 1.020408164 + -1.020408164 = 0.000000000 0.000000000 + x = 3.64501451 + -1.020408164 x = 3.64501451 + -1.020408164 Combine like terms: 3.64501451 + -1.020408164 = 2.624606346 x = 2.624606346 Simplifying x = 2.624606346

Subproblem 2

x + 1.020408164 = -3.64501451 Simplifying x + 1.020408164 = -3.64501451 Reorder the terms: 1.020408164 + x = -3.64501451 Solving 1.020408164 + x = -3.64501451 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.020408164' to each side of the equation. 1.020408164 + -1.020408164 + x = -3.64501451 + -1.020408164 Combine like terms: 1.020408164 + -1.020408164 = 0.000000000 0.000000000 + x = -3.64501451 + -1.020408164 x = -3.64501451 + -1.020408164 Combine like terms: -3.64501451 + -1.020408164 = -4.665422674 x = -4.665422674 Simplifying x = -4.665422674

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.624606346, -4.665422674}

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