1.5x^2+15x=1500

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Solution for 1.5x^2+15x=1500 equation:


Simplifying
1.5x2 + 15x = 1500

Reorder the terms:
15x + 1.5x2 = 1500

Solving
15x + 1.5x2 = 1500

Solving for variable 'x'.

Reorder the terms:
-1500 + 15x + 1.5x2 = 1500 + -1500

Combine like terms: 1500 + -1500 = 0
-1500 + 15x + 1.5x2 = 0

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

Divide each side by '1.5'.
-1000 + 10x + x2 = 0

Move the constant term to the right:

Add '1000' to each side of the equation.
-1000 + 10x + 1000 + x2 = 0 + 1000

Reorder the terms:
-1000 + 1000 + 10x + x2 = 0 + 1000

Combine like terms: -1000 + 1000 = 0
0 + 10x + x2 = 0 + 1000
10x + x2 = 0 + 1000

Combine like terms: 0 + 1000 = 1000
10x + x2 = 1000

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = 1000 + 25

Reorder the terms:
25 + 10x + x2 = 1000 + 25

Combine like terms: 1000 + 25 = 1025
25 + 10x + x2 = 1025

Factor a perfect square on the left side:
(x + 5)(x + 5) = 1025

Calculate the square root of the right side: 32.015621187

Break this problem into two subproblems by setting 
(x + 5) equal to 32.015621187 and -32.015621187.

Subproblem 1

x + 5 = 32.015621187 Simplifying x + 5 = 32.015621187 Reorder the terms: 5 + x = 32.015621187 Solving 5 + x = 32.015621187 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 32.015621187 + -5 Combine like terms: 5 + -5 = 0 0 + x = 32.015621187 + -5 x = 32.015621187 + -5 Combine like terms: 32.015621187 + -5 = 27.015621187 x = 27.015621187 Simplifying x = 27.015621187

Subproblem 2

x + 5 = -32.015621187 Simplifying x + 5 = -32.015621187 Reorder the terms: 5 + x = -32.015621187 Solving 5 + x = -32.015621187 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -32.015621187 + -5 Combine like terms: 5 + -5 = 0 0 + x = -32.015621187 + -5 x = -32.015621187 + -5 Combine like terms: -32.015621187 + -5 = -37.015621187 x = -37.015621187 Simplifying x = -37.015621187

Solution

The solution to the problem is based on the solutions from the subproblems. x = {27.015621187, -37.015621187}

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