5X^2+30X=12

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Solution for 5X^2+30X=12 equation:


Simplifying
5X2 + 30X = 12

Reorder the terms:
30X + 5X2 = 12

Solving
30X + 5X2 = 12

Solving for variable 'X'.

Reorder the terms:
-12 + 30X + 5X2 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + 30X + 5X2 = 0

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

Divide each side by '5'.
-2.4 + 6X + X2 = 0

Move the constant term to the right:

Add '2.4' to each side of the equation.
-2.4 + 6X + 2.4 + X2 = 0 + 2.4

Reorder the terms:
-2.4 + 2.4 + 6X + X2 = 0 + 2.4

Combine like terms: -2.4 + 2.4 = 0.0
0.0 + 6X + X2 = 0 + 2.4
6X + X2 = 0 + 2.4

Combine like terms: 0 + 2.4 = 2.4
6X + X2 = 2.4

The X term is 6X.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6X + 9 + X2 = 2.4 + 9

Reorder the terms:
9 + 6X + X2 = 2.4 + 9

Combine like terms: 2.4 + 9 = 11.4
9 + 6X + X2 = 11.4

Factor a perfect square on the left side:
(X + 3)(X + 3) = 11.4

Calculate the square root of the right side: 3.376388603

Break this problem into two subproblems by setting 
(X + 3) equal to 3.376388603 and -3.376388603.

Subproblem 1

X + 3 = 3.376388603 Simplifying X + 3 = 3.376388603 Reorder the terms: 3 + X = 3.376388603 Solving 3 + X = 3.376388603 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + X = 3.376388603 + -3 Combine like terms: 3 + -3 = 0 0 + X = 3.376388603 + -3 X = 3.376388603 + -3 Combine like terms: 3.376388603 + -3 = 0.376388603 X = 0.376388603 Simplifying X = 0.376388603

Subproblem 2

X + 3 = -3.376388603 Simplifying X + 3 = -3.376388603 Reorder the terms: 3 + X = -3.376388603 Solving 3 + X = -3.376388603 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + X = -3.376388603 + -3 Combine like terms: 3 + -3 = 0 0 + X = -3.376388603 + -3 X = -3.376388603 + -3 Combine like terms: -3.376388603 + -3 = -6.376388603 X = -6.376388603 Simplifying X = -6.376388603

Solution

The solution to the problem is based on the solutions from the subproblems. X = {0.376388603, -6.376388603}

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