7.32x^2+2.82x=5.51

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Solution for 7.32x^2+2.82x=5.51 equation:


Simplifying
7.32x2 + 2.82x = 5.51

Reorder the terms:
2.82x + 7.32x2 = 5.51

Solving
2.82x + 7.32x2 = 5.51

Solving for variable 'x'.

Reorder the terms:
-5.51 + 2.82x + 7.32x2 = 5.51 + -5.51

Combine like terms: 5.51 + -5.51 = 0.00
-5.51 + 2.82x + 7.32x2 = 0.00

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

Divide each side by '7.32'.
-0.7527322404 + 0.3852459016x + x2 = 0

Move the constant term to the right:

Add '0.7527322404' to each side of the equation.
-0.7527322404 + 0.3852459016x + 0.7527322404 + x2 = 0 + 0.7527322404

Reorder the terms:
-0.7527322404 + 0.7527322404 + 0.3852459016x + x2 = 0 + 0.7527322404

Combine like terms: -0.7527322404 + 0.7527322404 = 0.0000000000
0.0000000000 + 0.3852459016x + x2 = 0 + 0.7527322404
0.3852459016x + x2 = 0 + 0.7527322404

Combine like terms: 0 + 0.7527322404 = 0.7527322404
0.3852459016x + x2 = 0.7527322404

The x term is 0.3852459016x.  Take half its coefficient (0.1926229508).
Square it (0.03710360117) and add it to both sides.

Add '0.03710360117' to each side of the equation.
0.3852459016x + 0.03710360117 + x2 = 0.7527322404 + 0.03710360117

Reorder the terms:
0.03710360117 + 0.3852459016x + x2 = 0.7527322404 + 0.03710360117

Combine like terms: 0.7527322404 + 0.03710360117 = 0.78983584157
0.03710360117 + 0.3852459016x + x2 = 0.78983584157

Factor a perfect square on the left side:
(x + 0.1926229508)(x + 0.1926229508) = 0.78983584157

Calculate the square root of the right side: 0.888727091

Break this problem into two subproblems by setting 
(x + 0.1926229508) equal to 0.888727091 and -0.888727091.

Subproblem 1

x + 0.1926229508 = 0.888727091 Simplifying x + 0.1926229508 = 0.888727091 Reorder the terms: 0.1926229508 + x = 0.888727091 Solving 0.1926229508 + x = 0.888727091 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1926229508' to each side of the equation. 0.1926229508 + -0.1926229508 + x = 0.888727091 + -0.1926229508 Combine like terms: 0.1926229508 + -0.1926229508 = 0.0000000000 0.0000000000 + x = 0.888727091 + -0.1926229508 x = 0.888727091 + -0.1926229508 Combine like terms: 0.888727091 + -0.1926229508 = 0.6961041402 x = 0.6961041402 Simplifying x = 0.6961041402

Subproblem 2

x + 0.1926229508 = -0.888727091 Simplifying x + 0.1926229508 = -0.888727091 Reorder the terms: 0.1926229508 + x = -0.888727091 Solving 0.1926229508 + x = -0.888727091 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1926229508' to each side of the equation. 0.1926229508 + -0.1926229508 + x = -0.888727091 + -0.1926229508 Combine like terms: 0.1926229508 + -0.1926229508 = 0.0000000000 0.0000000000 + x = -0.888727091 + -0.1926229508 x = -0.888727091 + -0.1926229508 Combine like terms: -0.888727091 + -0.1926229508 = -1.0813500418 x = -1.0813500418 Simplifying x = -1.0813500418

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6961041402, -1.0813500418}

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