7.61x^2+2.72x=5.32

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Solution for 7.61x^2+2.72x=5.32 equation:


Simplifying
7.61x2 + 2.72x = 5.32

Reorder the terms:
2.72x + 7.61x2 = 5.32

Solving
2.72x + 7.61x2 = 5.32

Solving for variable 'x'.

Reorder the terms:
-5.32 + 2.72x + 7.61x2 = 5.32 + -5.32

Combine like terms: 5.32 + -5.32 = 0.00
-5.32 + 2.72x + 7.61x2 = 0.00

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

Divide each side by '7.61'.
-0.6990801577 + 0.3574244415x + x2 = 0

Move the constant term to the right:

Add '0.6990801577' to each side of the equation.
-0.6990801577 + 0.3574244415x + 0.6990801577 + x2 = 0 + 0.6990801577

Reorder the terms:
-0.6990801577 + 0.6990801577 + 0.3574244415x + x2 = 0 + 0.6990801577

Combine like terms: -0.6990801577 + 0.6990801577 = 0.0000000000
0.0000000000 + 0.3574244415x + x2 = 0 + 0.6990801577
0.3574244415x + x2 = 0 + 0.6990801577

Combine like terms: 0 + 0.6990801577 = 0.6990801577
0.3574244415x + x2 = 0.6990801577

The x term is 0.3574244415x.  Take half its coefficient (0.1787122208).
Square it (0.03193805786) and add it to both sides.

Add '0.03193805786' to each side of the equation.
0.3574244415x + 0.03193805786 + x2 = 0.6990801577 + 0.03193805786

Reorder the terms:
0.03193805786 + 0.3574244415x + x2 = 0.6990801577 + 0.03193805786

Combine like terms: 0.6990801577 + 0.03193805786 = 0.73101821556
0.03193805786 + 0.3574244415x + x2 = 0.73101821556

Factor a perfect square on the left side:
(x + 0.1787122208)(x + 0.1787122208) = 0.73101821556

Calculate the square root of the right side: 0.854996032

Break this problem into two subproblems by setting 
(x + 0.1787122208) equal to 0.854996032 and -0.854996032.

Subproblem 1

x + 0.1787122208 = 0.854996032 Simplifying x + 0.1787122208 = 0.854996032 Reorder the terms: 0.1787122208 + x = 0.854996032 Solving 0.1787122208 + x = 0.854996032 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1787122208' to each side of the equation. 0.1787122208 + -0.1787122208 + x = 0.854996032 + -0.1787122208 Combine like terms: 0.1787122208 + -0.1787122208 = 0.0000000000 0.0000000000 + x = 0.854996032 + -0.1787122208 x = 0.854996032 + -0.1787122208 Combine like terms: 0.854996032 + -0.1787122208 = 0.6762838112 x = 0.6762838112 Simplifying x = 0.6762838112

Subproblem 2

x + 0.1787122208 = -0.854996032 Simplifying x + 0.1787122208 = -0.854996032 Reorder the terms: 0.1787122208 + x = -0.854996032 Solving 0.1787122208 + x = -0.854996032 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1787122208' to each side of the equation. 0.1787122208 + -0.1787122208 + x = -0.854996032 + -0.1787122208 Combine like terms: 0.1787122208 + -0.1787122208 = 0.0000000000 0.0000000000 + x = -0.854996032 + -0.1787122208 x = -0.854996032 + -0.1787122208 Combine like terms: -0.854996032 + -0.1787122208 = -1.0337082528 x = -1.0337082528 Simplifying x = -1.0337082528

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6762838112, -1.0337082528}

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