3460=5x^2+3x

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Solution for 3460=5x^2+3x equation:


Simplifying
3460 = 5x2 + 3x

Reorder the terms:
3460 = 3x + 5x2

Solving
3460 = 3x + 5x2

Solving for variable 'x'.

Reorder the terms:
3460 + -3x + -5x2 = 3x + -3x + 5x2 + -5x2

Combine like terms: 3x + -3x = 0
3460 + -3x + -5x2 = 0 + 5x2 + -5x2
3460 + -3x + -5x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
3460 + -3x + -5x2 = 0

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

Divide each side by '-5'.
-692 + 0.6x + x2 = 0

Move the constant term to the right:

Add '692' to each side of the equation.
-692 + 0.6x + 692 + x2 = 0 + 692

Reorder the terms:
-692 + 692 + 0.6x + x2 = 0 + 692

Combine like terms: -692 + 692 = 0
0 + 0.6x + x2 = 0 + 692
0.6x + x2 = 0 + 692

Combine like terms: 0 + 692 = 692
0.6x + x2 = 692

The x term is 0.6x.  Take half its coefficient (0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
0.6x + 0.09 + x2 = 692 + 0.09

Reorder the terms:
0.09 + 0.6x + x2 = 692 + 0.09

Combine like terms: 692 + 0.09 = 692.09
0.09 + 0.6x + x2 = 692.09

Factor a perfect square on the left side:
(x + 0.3)(x + 0.3) = 692.09

Calculate the square root of the right side: 26.307603464

Break this problem into two subproblems by setting 
(x + 0.3) equal to 26.307603464 and -26.307603464.

Subproblem 1

x + 0.3 = 26.307603464 Simplifying x + 0.3 = 26.307603464 Reorder the terms: 0.3 + x = 26.307603464 Solving 0.3 + x = 26.307603464 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3' to each side of the equation. 0.3 + -0.3 + x = 26.307603464 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + x = 26.307603464 + -0.3 x = 26.307603464 + -0.3 Combine like terms: 26.307603464 + -0.3 = 26.007603464 x = 26.007603464 Simplifying x = 26.007603464

Subproblem 2

x + 0.3 = -26.307603464 Simplifying x + 0.3 = -26.307603464 Reorder the terms: 0.3 + x = -26.307603464 Solving 0.3 + x = -26.307603464 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3' to each side of the equation. 0.3 + -0.3 + x = -26.307603464 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + x = -26.307603464 + -0.3 x = -26.307603464 + -0.3 Combine like terms: -26.307603464 + -0.3 = -26.607603464 x = -26.607603464 Simplifying x = -26.607603464

Solution

The solution to the problem is based on the solutions from the subproblems. x = {26.007603464, -26.607603464}

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