1.01=1.2X+0.22X^2

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Solution for 1.01=1.2X+0.22X^2 equation:


Simplifying
1.01 = 1.2X + 0.22X2

Solving
1.01 = 1.2X + 0.22X2

Solving for variable 'X'.

Reorder the terms:
1.01 + -1.2X + -0.22X2 = 1.2X + -1.2X + 0.22X2 + -0.22X2

Combine like terms: 1.2X + -1.2X = 0.0
1.01 + -1.2X + -0.22X2 = 0.0 + 0.22X2 + -0.22X2
1.01 + -1.2X + -0.22X2 = 0.22X2 + -0.22X2

Combine like terms: 0.22X2 + -0.22X2 = 0.00
1.01 + -1.2X + -0.22X2 = 0.00

Begin completing the square.  Divide all terms by
-0.22 the coefficient of the squared term: 

Divide each side by '-0.22'.
-4.590909091 + 5.454545455X + X2 = 0

Move the constant term to the right:

Add '4.590909091' to each side of the equation.
-4.590909091 + 5.454545455X + 4.590909091 + X2 = 0 + 4.590909091

Reorder the terms:
-4.590909091 + 4.590909091 + 5.454545455X + X2 = 0 + 4.590909091

Combine like terms: -4.590909091 + 4.590909091 = 0.000000000
0.000000000 + 5.454545455X + X2 = 0 + 4.590909091
5.454545455X + X2 = 0 + 4.590909091

Combine like terms: 0 + 4.590909091 = 4.590909091
5.454545455X + X2 = 4.590909091

The X term is 5.454545455X.  Take half its coefficient (2.727272728).
Square it (7.438016533) and add it to both sides.

Add '7.438016533' to each side of the equation.
5.454545455X + 7.438016533 + X2 = 4.590909091 + 7.438016533

Reorder the terms:
7.438016533 + 5.454545455X + X2 = 4.590909091 + 7.438016533

Combine like terms: 4.590909091 + 7.438016533 = 12.028925624
7.438016533 + 5.454545455X + X2 = 12.028925624

Factor a perfect square on the left side:
(X + 2.727272728)(X + 2.727272728) = 12.028925624

Calculate the square root of the right side: 3.468274156

Break this problem into two subproblems by setting 
(X + 2.727272728) equal to 3.468274156 and -3.468274156.

Subproblem 1

X + 2.727272728 = 3.468274156 Simplifying X + 2.727272728 = 3.468274156 Reorder the terms: 2.727272728 + X = 3.468274156 Solving 2.727272728 + X = 3.468274156 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-2.727272728' to each side of the equation. 2.727272728 + -2.727272728 + X = 3.468274156 + -2.727272728 Combine like terms: 2.727272728 + -2.727272728 = 0.000000000 0.000000000 + X = 3.468274156 + -2.727272728 X = 3.468274156 + -2.727272728 Combine like terms: 3.468274156 + -2.727272728 = 0.741001428 X = 0.741001428 Simplifying X = 0.741001428

Subproblem 2

X + 2.727272728 = -3.468274156 Simplifying X + 2.727272728 = -3.468274156 Reorder the terms: 2.727272728 + X = -3.468274156 Solving 2.727272728 + X = -3.468274156 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-2.727272728' to each side of the equation. 2.727272728 + -2.727272728 + X = -3.468274156 + -2.727272728 Combine like terms: 2.727272728 + -2.727272728 = 0.000000000 0.000000000 + X = -3.468274156 + -2.727272728 X = -3.468274156 + -2.727272728 Combine like terms: -3.468274156 + -2.727272728 = -6.195546884 X = -6.195546884 Simplifying X = -6.195546884

Solution

The solution to the problem is based on the solutions from the subproblems. X = {0.741001428, -6.195546884}

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