7.69x^2+2.73x=5.36

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Solution for 7.69x^2+2.73x=5.36 equation:


Simplifying
7.69x2 + 2.73x = 5.36

Reorder the terms:
2.73x + 7.69x2 = 5.36

Solving
2.73x + 7.69x2 = 5.36

Solving for variable 'x'.

Reorder the terms:
-5.36 + 2.73x + 7.69x2 = 5.36 + -5.36

Combine like terms: 5.36 + -5.36 = 0.00
-5.36 + 2.73x + 7.69x2 = 0.00

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

Divide each side by '7.69'.
-0.6970091027 + 0.355006502x + x2 = 0

Move the constant term to the right:

Add '0.6970091027' to each side of the equation.
-0.6970091027 + 0.355006502x + 0.6970091027 + x2 = 0 + 0.6970091027

Reorder the terms:
-0.6970091027 + 0.6970091027 + 0.355006502x + x2 = 0 + 0.6970091027

Combine like terms: -0.6970091027 + 0.6970091027 = 0.0000000000
0.0000000000 + 0.355006502x + x2 = 0 + 0.6970091027
0.355006502x + x2 = 0 + 0.6970091027

Combine like terms: 0 + 0.6970091027 = 0.6970091027
0.355006502x + x2 = 0.6970091027

The x term is 0.355006502x.  Take half its coefficient (0.177503251).
Square it (0.03150740412) and add it to both sides.

Add '0.03150740412' to each side of the equation.
0.355006502x + 0.03150740412 + x2 = 0.6970091027 + 0.03150740412

Reorder the terms:
0.03150740412 + 0.355006502x + x2 = 0.6970091027 + 0.03150740412

Combine like terms: 0.6970091027 + 0.03150740412 = 0.72851650682
0.03150740412 + 0.355006502x + x2 = 0.72851650682

Factor a perfect square on the left side:
(x + 0.177503251)(x + 0.177503251) = 0.72851650682

Calculate the square root of the right side: 0.853531784

Break this problem into two subproblems by setting 
(x + 0.177503251) equal to 0.853531784 and -0.853531784.

Subproblem 1

x + 0.177503251 = 0.853531784 Simplifying x + 0.177503251 = 0.853531784 Reorder the terms: 0.177503251 + x = 0.853531784 Solving 0.177503251 + x = 0.853531784 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.177503251' to each side of the equation. 0.177503251 + -0.177503251 + x = 0.853531784 + -0.177503251 Combine like terms: 0.177503251 + -0.177503251 = 0.000000000 0.000000000 + x = 0.853531784 + -0.177503251 x = 0.853531784 + -0.177503251 Combine like terms: 0.853531784 + -0.177503251 = 0.676028533 x = 0.676028533 Simplifying x = 0.676028533

Subproblem 2

x + 0.177503251 = -0.853531784 Simplifying x + 0.177503251 = -0.853531784 Reorder the terms: 0.177503251 + x = -0.853531784 Solving 0.177503251 + x = -0.853531784 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.177503251' to each side of the equation. 0.177503251 + -0.177503251 + x = -0.853531784 + -0.177503251 Combine like terms: 0.177503251 + -0.177503251 = 0.000000000 0.000000000 + x = -0.853531784 + -0.177503251 x = -0.853531784 + -0.177503251 Combine like terms: -0.853531784 + -0.177503251 = -1.031035035 x = -1.031035035 Simplifying x = -1.031035035

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.676028533, -1.031035035}

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