(1.293x+x^2)=19

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Solution for (1.293x+x^2)=19 equation:


Simplifying
(1.293x + x2) = 19

Remove parenthesis around (1.293x + x2)
1.293x + x2 = 19

Solving
1.293x + x2 = 19

Solving for variable 'x'.

Reorder the terms:
-19 + 1.293x + x2 = 19 + -19

Combine like terms: 19 + -19 = 0
-19 + 1.293x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '19' to each side of the equation.
-19 + 1.293x + 19 + x2 = 0 + 19

Reorder the terms:
-19 + 19 + 1.293x + x2 = 0 + 19

Combine like terms: -19 + 19 = 0
0 + 1.293x + x2 = 0 + 19
1.293x + x2 = 0 + 19

Combine like terms: 0 + 19 = 19
1.293x + x2 = 19

The x term is 1.293x.  Take half its coefficient (0.6465).
Square it (0.41796225) and add it to both sides.

Add '0.41796225' to each side of the equation.
1.293x + 0.41796225 + x2 = 19 + 0.41796225

Reorder the terms:
0.41796225 + 1.293x + x2 = 19 + 0.41796225

Combine like terms: 19 + 0.41796225 = 19.41796225
0.41796225 + 1.293x + x2 = 19.41796225

Factor a perfect square on the left side:
(x + 0.6465)(x + 0.6465) = 19.41796225

Calculate the square root of the right side: 4.406581697

Break this problem into two subproblems by setting 
(x + 0.6465) equal to 4.406581697 and -4.406581697.

Subproblem 1

x + 0.6465 = 4.406581697 Simplifying x + 0.6465 = 4.406581697 Reorder the terms: 0.6465 + x = 4.406581697 Solving 0.6465 + x = 4.406581697 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6465' to each side of the equation. 0.6465 + -0.6465 + x = 4.406581697 + -0.6465 Combine like terms: 0.6465 + -0.6465 = 0.0000 0.0000 + x = 4.406581697 + -0.6465 x = 4.406581697 + -0.6465 Combine like terms: 4.406581697 + -0.6465 = 3.760081697 x = 3.760081697 Simplifying x = 3.760081697

Subproblem 2

x + 0.6465 = -4.406581697 Simplifying x + 0.6465 = -4.406581697 Reorder the terms: 0.6465 + x = -4.406581697 Solving 0.6465 + x = -4.406581697 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6465' to each side of the equation. 0.6465 + -0.6465 + x = -4.406581697 + -0.6465 Combine like terms: 0.6465 + -0.6465 = 0.0000 0.0000 + x = -4.406581697 + -0.6465 x = -4.406581697 + -0.6465 Combine like terms: -4.406581697 + -0.6465 = -5.053081697 x = -5.053081697 Simplifying x = -5.053081697

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.760081697, -5.053081697}

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