9x^2+3x+5=60

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Solution for 9x^2+3x+5=60 equation:


Simplifying
9x2 + 3x + 5 = 60

Reorder the terms:
5 + 3x + 9x2 = 60

Solving
5 + 3x + 9x2 = 60

Solving for variable 'x'.

Reorder the terms:
5 + -60 + 3x + 9x2 = 60 + -60

Combine like terms: 5 + -60 = -55
-55 + 3x + 9x2 = 60 + -60

Combine like terms: 60 + -60 = 0
-55 + 3x + 9x2 = 0

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

Divide each side by '9'.
-6.111111111 + 0.3333333333x + x2 = 0

Move the constant term to the right:

Add '6.111111111' to each side of the equation.
-6.111111111 + 0.3333333333x + 6.111111111 + x2 = 0 + 6.111111111

Reorder the terms:
-6.111111111 + 6.111111111 + 0.3333333333x + x2 = 0 + 6.111111111

Combine like terms: -6.111111111 + 6.111111111 = 0.000000000
0.000000000 + 0.3333333333x + x2 = 0 + 6.111111111
0.3333333333x + x2 = 0 + 6.111111111

Combine like terms: 0 + 6.111111111 = 6.111111111
0.3333333333x + x2 = 6.111111111

The x term is 0.3333333333x.  Take half its coefficient (0.1666666667).
Square it (0.02777777779) and add it to both sides.

Add '0.02777777779' to each side of the equation.
0.3333333333x + 0.02777777779 + x2 = 6.111111111 + 0.02777777779

Reorder the terms:
0.02777777779 + 0.3333333333x + x2 = 6.111111111 + 0.02777777779

Combine like terms: 6.111111111 + 0.02777777779 = 6.13888888879
0.02777777779 + 0.3333333333x + x2 = 6.13888888879

Factor a perfect square on the left side:
(x + 0.1666666667)(x + 0.1666666667) = 6.13888888879

Calculate the square root of the right side: 2.477678125

Break this problem into two subproblems by setting 
(x + 0.1666666667) equal to 2.477678125 and -2.477678125.

Subproblem 1

x + 0.1666666667 = 2.477678125 Simplifying x + 0.1666666667 = 2.477678125 Reorder the terms: 0.1666666667 + x = 2.477678125 Solving 0.1666666667 + x = 2.477678125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + x = 2.477678125 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + x = 2.477678125 + -0.1666666667 x = 2.477678125 + -0.1666666667 Combine like terms: 2.477678125 + -0.1666666667 = 2.3110114583 x = 2.3110114583 Simplifying x = 2.3110114583

Subproblem 2

x + 0.1666666667 = -2.477678125 Simplifying x + 0.1666666667 = -2.477678125 Reorder the terms: 0.1666666667 + x = -2.477678125 Solving 0.1666666667 + x = -2.477678125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + x = -2.477678125 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + x = -2.477678125 + -0.1666666667 x = -2.477678125 + -0.1666666667 Combine like terms: -2.477678125 + -0.1666666667 = -2.6443447917 x = -2.6443447917 Simplifying x = -2.6443447917

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.3110114583, -2.6443447917}

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