.45x^2+11.7x=101.4

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Solution for .45x^2+11.7x=101.4 equation:


Simplifying
0.45x2 + 11.7x = 101.4

Reorder the terms:
11.7x + 0.45x2 = 101.4

Solving
11.7x + 0.45x2 = 101.4

Solving for variable 'x'.

Reorder the terms:
-101.4 + 11.7x + 0.45x2 = 101.4 + -101.4

Combine like terms: 101.4 + -101.4 = 0.0
-101.4 + 11.7x + 0.45x2 = 0.0

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

Divide each side by '0.45'.
-225.3333333 + 26x + x2 = 0

Move the constant term to the right:

Add '225.3333333' to each side of the equation.
-225.3333333 + 26x + 225.3333333 + x2 = 0 + 225.3333333

Reorder the terms:
-225.3333333 + 225.3333333 + 26x + x2 = 0 + 225.3333333

Combine like terms: -225.3333333 + 225.3333333 = 0.0000000
0.0000000 + 26x + x2 = 0 + 225.3333333
26x + x2 = 0 + 225.3333333

Combine like terms: 0 + 225.3333333 = 225.3333333
26x + x2 = 225.3333333

The x term is 26x.  Take half its coefficient (13).
Square it (169) and add it to both sides.

Add '169' to each side of the equation.
26x + 169 + x2 = 225.3333333 + 169

Reorder the terms:
169 + 26x + x2 = 225.3333333 + 169

Combine like terms: 225.3333333 + 169 = 394.3333333
169 + 26x + x2 = 394.3333333

Factor a perfect square on the left side:
(x + 13)(x + 13) = 394.3333333

Calculate the square root of the right side: 19.857828011

Break this problem into two subproblems by setting 
(x + 13) equal to 19.857828011 and -19.857828011.

Subproblem 1

x + 13 = 19.857828011 Simplifying x + 13 = 19.857828011 Reorder the terms: 13 + x = 19.857828011 Solving 13 + x = 19.857828011 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + x = 19.857828011 + -13 Combine like terms: 13 + -13 = 0 0 + x = 19.857828011 + -13 x = 19.857828011 + -13 Combine like terms: 19.857828011 + -13 = 6.857828011 x = 6.857828011 Simplifying x = 6.857828011

Subproblem 2

x + 13 = -19.857828011 Simplifying x + 13 = -19.857828011 Reorder the terms: 13 + x = -19.857828011 Solving 13 + x = -19.857828011 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + x = -19.857828011 + -13 Combine like terms: 13 + -13 = 0 0 + x = -19.857828011 + -13 x = -19.857828011 + -13 Combine like terms: -19.857828011 + -13 = -32.857828011 x = -32.857828011 Simplifying x = -32.857828011

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.857828011, -32.857828011}

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