27x^2-24x-7=0

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Solution for 27x^2-24x-7=0 equation:


Simplifying
27x2 + -24x + -7 = 0

Reorder the terms:
-7 + -24x + 27x2 = 0

Solving
-7 + -24x + 27x2 = 0

Solving for variable 'x'.

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

Divide each side by '27'.
-0.2592592593 + -0.8888888889x + x2 = 0

Move the constant term to the right:

Add '0.2592592593' to each side of the equation.
-0.2592592593 + -0.8888888889x + 0.2592592593 + x2 = 0 + 0.2592592593

Reorder the terms:
-0.2592592593 + 0.2592592593 + -0.8888888889x + x2 = 0 + 0.2592592593

Combine like terms: -0.2592592593 + 0.2592592593 = 0.0000000000
0.0000000000 + -0.8888888889x + x2 = 0 + 0.2592592593
-0.8888888889x + x2 = 0 + 0.2592592593

Combine like terms: 0 + 0.2592592593 = 0.2592592593
-0.8888888889x + x2 = 0.2592592593

The x term is -0.8888888889x.  Take half its coefficient (-0.4444444445).
Square it (0.1975308642) and add it to both sides.

Add '0.1975308642' to each side of the equation.
-0.8888888889x + 0.1975308642 + x2 = 0.2592592593 + 0.1975308642

Reorder the terms:
0.1975308642 + -0.8888888889x + x2 = 0.2592592593 + 0.1975308642

Combine like terms: 0.2592592593 + 0.1975308642 = 0.4567901235
0.1975308642 + -0.8888888889x + x2 = 0.4567901235

Factor a perfect square on the left side:
(x + -0.4444444445)(x + -0.4444444445) = 0.4567901235

Calculate the square root of the right side: 0.675862503

Break this problem into two subproblems by setting 
(x + -0.4444444445) equal to 0.675862503 and -0.675862503.

Subproblem 1

x + -0.4444444445 = 0.675862503 Simplifying x + -0.4444444445 = 0.675862503 Reorder the terms: -0.4444444445 + x = 0.675862503 Solving -0.4444444445 + x = 0.675862503 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4444444445' to each side of the equation. -0.4444444445 + 0.4444444445 + x = 0.675862503 + 0.4444444445 Combine like terms: -0.4444444445 + 0.4444444445 = 0.0000000000 0.0000000000 + x = 0.675862503 + 0.4444444445 x = 0.675862503 + 0.4444444445 Combine like terms: 0.675862503 + 0.4444444445 = 1.1203069475 x = 1.1203069475 Simplifying x = 1.1203069475

Subproblem 2

x + -0.4444444445 = -0.675862503 Simplifying x + -0.4444444445 = -0.675862503 Reorder the terms: -0.4444444445 + x = -0.675862503 Solving -0.4444444445 + x = -0.675862503 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4444444445' to each side of the equation. -0.4444444445 + 0.4444444445 + x = -0.675862503 + 0.4444444445 Combine like terms: -0.4444444445 + 0.4444444445 = 0.0000000000 0.0000000000 + x = -0.675862503 + 0.4444444445 x = -0.675862503 + 0.4444444445 Combine like terms: -0.675862503 + 0.4444444445 = -0.2314180585 x = -0.2314180585 Simplifying x = -0.2314180585

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.1203069475, -0.2314180585}

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