2.943x^2-3.255x-0.9=0

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Solution for 2.943x^2-3.255x-0.9=0 equation:


Simplifying
2.943x2 + -3.255x + -0.9 = 0

Reorder the terms:
-0.9 + -3.255x + 2.943x2 = 0

Solving
-0.9 + -3.255x + 2.943x2 = 0

Solving for variable 'x'.

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

Divide each side by '2.943'.
-0.3058103976 + -1.106014271x + x2 = 0

Move the constant term to the right:

Add '0.3058103976' to each side of the equation.
-0.3058103976 + -1.106014271x + 0.3058103976 + x2 = 0 + 0.3058103976

Reorder the terms:
-0.3058103976 + 0.3058103976 + -1.106014271x + x2 = 0 + 0.3058103976

Combine like terms: -0.3058103976 + 0.3058103976 = 0.0000000000
0.0000000000 + -1.106014271x + x2 = 0 + 0.3058103976
-1.106014271x + x2 = 0 + 0.3058103976

Combine like terms: 0 + 0.3058103976 = 0.3058103976
-1.106014271x + x2 = 0.3058103976

The x term is -1.106014271x.  Take half its coefficient (-0.5530071355).
Square it (0.3058168919) and add it to both sides.

Add '0.3058168919' to each side of the equation.
-1.106014271x + 0.3058168919 + x2 = 0.3058103976 + 0.3058168919

Reorder the terms:
0.3058168919 + -1.106014271x + x2 = 0.3058103976 + 0.3058168919

Combine like terms: 0.3058103976 + 0.3058168919 = 0.6116272895
0.3058168919 + -1.106014271x + x2 = 0.6116272895

Factor a perfect square on the left side:
(x + -0.5530071355)(x + -0.5530071355) = 0.6116272895

Calculate the square root of the right side: 0.782066039

Break this problem into two subproblems by setting 
(x + -0.5530071355) equal to 0.782066039 and -0.782066039.

Subproblem 1

x + -0.5530071355 = 0.782066039 Simplifying x + -0.5530071355 = 0.782066039 Reorder the terms: -0.5530071355 + x = 0.782066039 Solving -0.5530071355 + x = 0.782066039 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5530071355' to each side of the equation. -0.5530071355 + 0.5530071355 + x = 0.782066039 + 0.5530071355 Combine like terms: -0.5530071355 + 0.5530071355 = 0.0000000000 0.0000000000 + x = 0.782066039 + 0.5530071355 x = 0.782066039 + 0.5530071355 Combine like terms: 0.782066039 + 0.5530071355 = 1.3350731745 x = 1.3350731745 Simplifying x = 1.3350731745

Subproblem 2

x + -0.5530071355 = -0.782066039 Simplifying x + -0.5530071355 = -0.782066039 Reorder the terms: -0.5530071355 + x = -0.782066039 Solving -0.5530071355 + x = -0.782066039 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5530071355' to each side of the equation. -0.5530071355 + 0.5530071355 + x = -0.782066039 + 0.5530071355 Combine like terms: -0.5530071355 + 0.5530071355 = 0.0000000000 0.0000000000 + x = -0.782066039 + 0.5530071355 x = -0.782066039 + 0.5530071355 Combine like terms: -0.782066039 + 0.5530071355 = -0.2290589035 x = -0.2290589035 Simplifying x = -0.2290589035

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.3350731745, -0.2290589035}

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