-16x^2-27x+180=0

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Solution for -16x^2-27x+180=0 equation:


Simplifying
-16x2 + -27x + 180 = 0

Reorder the terms:
180 + -27x + -16x2 = 0

Solving
180 + -27x + -16x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
-11.25 + 1.6875x + x2 = 0

Move the constant term to the right:

Add '11.25' to each side of the equation.
-11.25 + 1.6875x + 11.25 + x2 = 0 + 11.25

Reorder the terms:
-11.25 + 11.25 + 1.6875x + x2 = 0 + 11.25

Combine like terms: -11.25 + 11.25 = 0.00
0.00 + 1.6875x + x2 = 0 + 11.25
1.6875x + x2 = 0 + 11.25

Combine like terms: 0 + 11.25 = 11.25
1.6875x + x2 = 11.25

The x term is 1.6875x.  Take half its coefficient (0.84375).
Square it (0.7119140625) and add it to both sides.

Add '0.7119140625' to each side of the equation.
1.6875x + 0.7119140625 + x2 = 11.25 + 0.7119140625

Reorder the terms:
0.7119140625 + 1.6875x + x2 = 11.25 + 0.7119140625

Combine like terms: 11.25 + 0.7119140625 = 11.9619140625
0.7119140625 + 1.6875x + x2 = 11.9619140625

Factor a perfect square on the left side:
(x + 0.84375)(x + 0.84375) = 11.9619140625

Calculate the square root of the right side: 3.458600015

Break this problem into two subproblems by setting 
(x + 0.84375) equal to 3.458600015 and -3.458600015.

Subproblem 1

x + 0.84375 = 3.458600015 Simplifying x + 0.84375 = 3.458600015 Reorder the terms: 0.84375 + x = 3.458600015 Solving 0.84375 + x = 3.458600015 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.84375' to each side of the equation. 0.84375 + -0.84375 + x = 3.458600015 + -0.84375 Combine like terms: 0.84375 + -0.84375 = 0.00000 0.00000 + x = 3.458600015 + -0.84375 x = 3.458600015 + -0.84375 Combine like terms: 3.458600015 + -0.84375 = 2.614850015 x = 2.614850015 Simplifying x = 2.614850015

Subproblem 2

x + 0.84375 = -3.458600015 Simplifying x + 0.84375 = -3.458600015 Reorder the terms: 0.84375 + x = -3.458600015 Solving 0.84375 + x = -3.458600015 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.84375' to each side of the equation. 0.84375 + -0.84375 + x = -3.458600015 + -0.84375 Combine like terms: 0.84375 + -0.84375 = 0.00000 0.00000 + x = -3.458600015 + -0.84375 x = -3.458600015 + -0.84375 Combine like terms: -3.458600015 + -0.84375 = -4.302350015 x = -4.302350015 Simplifying x = -4.302350015

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.614850015, -4.302350015}

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