0.25X^2+0.33X-0.75=0

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Solution for 0.25X^2+0.33X-0.75=0 equation:


Simplifying
0.25X2 + 0.33X + -0.75 = 0

Reorder the terms:
-0.75 + 0.33X + 0.25X2 = 0

Solving
-0.75 + 0.33X + 0.25X2 = 0

Solving for variable 'X'.

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

Divide each side by '0.25'.
-3 + 1.32X + X2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 1.32X + 3 + X2 = 0 + 3

Reorder the terms:
-3 + 3 + 1.32X + X2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 1.32X + X2 = 0 + 3
1.32X + X2 = 0 + 3

Combine like terms: 0 + 3 = 3
1.32X + X2 = 3

The X term is 1.32X.  Take half its coefficient (0.66).
Square it (0.4356) and add it to both sides.

Add '0.4356' to each side of the equation.
1.32X + 0.4356 + X2 = 3 + 0.4356

Reorder the terms:
0.4356 + 1.32X + X2 = 3 + 0.4356

Combine like terms: 3 + 0.4356 = 3.4356
0.4356 + 1.32X + X2 = 3.4356

Factor a perfect square on the left side:
(X + 0.66)(X + 0.66) = 3.4356

Calculate the square root of the right side: 1.853537159

Break this problem into two subproblems by setting 
(X + 0.66) equal to 1.853537159 and -1.853537159.

Subproblem 1

X + 0.66 = 1.853537159 Simplifying X + 0.66 = 1.853537159 Reorder the terms: 0.66 + X = 1.853537159 Solving 0.66 + X = 1.853537159 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-0.66' to each side of the equation. 0.66 + -0.66 + X = 1.853537159 + -0.66 Combine like terms: 0.66 + -0.66 = 0.00 0.00 + X = 1.853537159 + -0.66 X = 1.853537159 + -0.66 Combine like terms: 1.853537159 + -0.66 = 1.193537159 X = 1.193537159 Simplifying X = 1.193537159

Subproblem 2

X + 0.66 = -1.853537159 Simplifying X + 0.66 = -1.853537159 Reorder the terms: 0.66 + X = -1.853537159 Solving 0.66 + X = -1.853537159 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-0.66' to each side of the equation. 0.66 + -0.66 + X = -1.853537159 + -0.66 Combine like terms: 0.66 + -0.66 = 0.00 0.00 + X = -1.853537159 + -0.66 X = -1.853537159 + -0.66 Combine like terms: -1.853537159 + -0.66 = -2.513537159 X = -2.513537159 Simplifying X = -2.513537159

Solution

The solution to the problem is based on the solutions from the subproblems. X = {1.193537159, -2.513537159}

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