-4x^2+24x+27=0

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Solution for -4x^2+24x+27=0 equation:


Simplifying
-4x2 + 24x + 27 = 0

Reorder the terms:
27 + 24x + -4x2 = 0

Solving
27 + 24x + -4x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-6.75 + -6x + x2 = 0

Move the constant term to the right:

Add '6.75' to each side of the equation.
-6.75 + -6x + 6.75 + x2 = 0 + 6.75

Reorder the terms:
-6.75 + 6.75 + -6x + x2 = 0 + 6.75

Combine like terms: -6.75 + 6.75 = 0.00
0.00 + -6x + x2 = 0 + 6.75
-6x + x2 = 0 + 6.75

Combine like terms: 0 + 6.75 = 6.75
-6x + x2 = 6.75

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 = 6.75 + 9

Reorder the terms:
9 + -6x + x2 = 6.75 + 9

Combine like terms: 6.75 + 9 = 15.75
9 + -6x + x2 = 15.75

Factor a perfect square on the left side:
(x + -3)(x + -3) = 15.75

Calculate the square root of the right side: 3.968626967

Break this problem into two subproblems by setting 
(x + -3) equal to 3.968626967 and -3.968626967.

Subproblem 1

x + -3 = 3.968626967 Simplifying x + -3 = 3.968626967 Reorder the terms: -3 + x = 3.968626967 Solving -3 + x = 3.968626967 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 = 3.968626967 + 3 Combine like terms: -3 + 3 = 0 0 + x = 3.968626967 + 3 x = 3.968626967 + 3 Combine like terms: 3.968626967 + 3 = 6.968626967 x = 6.968626967 Simplifying x = 6.968626967

Subproblem 2

x + -3 = -3.968626967 Simplifying x + -3 = -3.968626967 Reorder the terms: -3 + x = -3.968626967 Solving -3 + x = -3.968626967 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 = -3.968626967 + 3 Combine like terms: -3 + 3 = 0 0 + x = -3.968626967 + 3 x = -3.968626967 + 3 Combine like terms: -3.968626967 + 3 = -0.968626967 x = -0.968626967 Simplifying x = -0.968626967

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.968626967, -0.968626967}

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