5x^2+3x=50

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Solution for 5x^2+3x=50 equation:


Simplifying
5x2 + 3x = 50

Reorder the terms:
3x + 5x2 = 50

Solving
3x + 5x2 = 50

Solving for variable 'x'.

Reorder the terms:
-50 + 3x + 5x2 = 50 + -50

Combine like terms: 50 + -50 = 0
-50 + 3x + 5x2 = 0

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

Divide each side by '5'.
-10 + 0.6x + x2 = 0

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 0.6x + 10 + x2 = 0 + 10

Reorder the terms:
-10 + 10 + 0.6x + x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 0.6x + x2 = 0 + 10
0.6x + x2 = 0 + 10

Combine like terms: 0 + 10 = 10
0.6x + x2 = 10

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 = 10 + 0.09

Reorder the terms:
0.09 + 0.6x + x2 = 10 + 0.09

Combine like terms: 10 + 0.09 = 10.09
0.09 + 0.6x + x2 = 10.09

Factor a perfect square on the left side:
(x + 0.3)(x + 0.3) = 10.09

Calculate the square root of the right side: 3.176476035

Break this problem into two subproblems by setting 
(x + 0.3) equal to 3.176476035 and -3.176476035.

Subproblem 1

x + 0.3 = 3.176476035 Simplifying x + 0.3 = 3.176476035 Reorder the terms: 0.3 + x = 3.176476035 Solving 0.3 + x = 3.176476035 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 = 3.176476035 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + x = 3.176476035 + -0.3 x = 3.176476035 + -0.3 Combine like terms: 3.176476035 + -0.3 = 2.876476035 x = 2.876476035 Simplifying x = 2.876476035

Subproblem 2

x + 0.3 = -3.176476035 Simplifying x + 0.3 = -3.176476035 Reorder the terms: 0.3 + x = -3.176476035 Solving 0.3 + x = -3.176476035 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 = -3.176476035 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + x = -3.176476035 + -0.3 x = -3.176476035 + -0.3 Combine like terms: -3.176476035 + -0.3 = -3.476476035 x = -3.476476035 Simplifying x = -3.476476035

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.876476035, -3.476476035}

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