0.15x^2+2.7x=153

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Solution for 0.15x^2+2.7x=153 equation:


Simplifying
0.15x2 + 2.7x = 153

Reorder the terms:
2.7x + 0.15x2 = 153

Solving
2.7x + 0.15x2 = 153

Solving for variable 'x'.

Reorder the terms:
-153 + 2.7x + 0.15x2 = 153 + -153

Combine like terms: 153 + -153 = 0
-153 + 2.7x + 0.15x2 = 0

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

Divide each side by '0.15'.
-1020 + 18x + x2 = 0

Move the constant term to the right:

Add '1020' to each side of the equation.
-1020 + 18x + 1020 + x2 = 0 + 1020

Reorder the terms:
-1020 + 1020 + 18x + x2 = 0 + 1020

Combine like terms: -1020 + 1020 = 0
0 + 18x + x2 = 0 + 1020
18x + x2 = 0 + 1020

Combine like terms: 0 + 1020 = 1020
18x + x2 = 1020

The x term is 18x.  Take half its coefficient (9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
18x + 81 + x2 = 1020 + 81

Reorder the terms:
81 + 18x + x2 = 1020 + 81

Combine like terms: 1020 + 81 = 1101
81 + 18x + x2 = 1101

Factor a perfect square on the left side:
(x + 9)(x + 9) = 1101

Calculate the square root of the right side: 33.181320046

Break this problem into two subproblems by setting 
(x + 9) equal to 33.181320046 and -33.181320046.

Subproblem 1

x + 9 = 33.181320046 Simplifying x + 9 = 33.181320046 Reorder the terms: 9 + x = 33.181320046 Solving 9 + x = 33.181320046 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = 33.181320046 + -9 Combine like terms: 9 + -9 = 0 0 + x = 33.181320046 + -9 x = 33.181320046 + -9 Combine like terms: 33.181320046 + -9 = 24.181320046 x = 24.181320046 Simplifying x = 24.181320046

Subproblem 2

x + 9 = -33.181320046 Simplifying x + 9 = -33.181320046 Reorder the terms: 9 + x = -33.181320046 Solving 9 + x = -33.181320046 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = -33.181320046 + -9 Combine like terms: 9 + -9 = 0 0 + x = -33.181320046 + -9 x = -33.181320046 + -9 Combine like terms: -33.181320046 + -9 = -42.181320046 x = -42.181320046 Simplifying x = -42.181320046

Solution

The solution to the problem is based on the solutions from the subproblems. x = {24.181320046, -42.181320046}

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