2x^2-9x-41=0

Simple and best practice solution for 2x^2-9x-41=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 2x^2-9x-41=0 equation:


Simplifying
2x2 + -9x + -41 = 0

Reorder the terms:
-41 + -9x + 2x2 = 0

Solving
-41 + -9x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-20.5 + -4.5x + x2 = 0

Move the constant term to the right:

Add '20.5' to each side of the equation.
-20.5 + -4.5x + 20.5 + x2 = 0 + 20.5

Reorder the terms:
-20.5 + 20.5 + -4.5x + x2 = 0 + 20.5

Combine like terms: -20.5 + 20.5 = 0.0
0.0 + -4.5x + x2 = 0 + 20.5
-4.5x + x2 = 0 + 20.5

Combine like terms: 0 + 20.5 = 20.5
-4.5x + x2 = 20.5

The x term is -4.5x.  Take half its coefficient (-2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
-4.5x + 5.0625 + x2 = 20.5 + 5.0625

Reorder the terms:
5.0625 + -4.5x + x2 = 20.5 + 5.0625

Combine like terms: 20.5 + 5.0625 = 25.5625
5.0625 + -4.5x + x2 = 25.5625

Factor a perfect square on the left side:
(x + -2.25)(x + -2.25) = 25.5625

Calculate the square root of the right side: 5.055937104

Break this problem into two subproblems by setting 
(x + -2.25) equal to 5.055937104 and -5.055937104.

Subproblem 1

x + -2.25 = 5.055937104 Simplifying x + -2.25 = 5.055937104 Reorder the terms: -2.25 + x = 5.055937104 Solving -2.25 + x = 5.055937104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 5.055937104 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 5.055937104 + 2.25 x = 5.055937104 + 2.25 Combine like terms: 5.055937104 + 2.25 = 7.305937104 x = 7.305937104 Simplifying x = 7.305937104

Subproblem 2

x + -2.25 = -5.055937104 Simplifying x + -2.25 = -5.055937104 Reorder the terms: -2.25 + x = -5.055937104 Solving -2.25 + x = -5.055937104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -5.055937104 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -5.055937104 + 2.25 x = -5.055937104 + 2.25 Combine like terms: -5.055937104 + 2.25 = -2.805937104 x = -2.805937104 Simplifying x = -2.805937104

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.305937104, -2.805937104}

See similar equations:

| 3(3x+5)-5(x+7)=60 | | 10x-5-7x=4 | | X^4+10x=35 | | -6y+7=7y+1 | | 25r^2-16=0 | | y=-x^2-13x-40 | | s^2+3s+2=0 | | X^2+20x=57 | | 4r^2+21r+5= | | X^2+20x=50 | | -5(-8a-4b+6)= | | s-42=31 | | X^2+20=55 | | 54-30y= | | 25x-14=6+35x | | 4x^3-2x^2+6x-3=0 | | X^2+20=25 | | 2x-5y=-3 | | 16+14x+11m-5x-5m-11= | | 5a-25= | | X^2+20=50 | | 6r-21=3r | | (4-u)(2u+9)=0 | | 5x+7x-(8x+7)= | | 8m^2-6m-5= | | 4x+3y=-14 | | 2x^2=24x+45 | | -11(-7h-7k+8)= | | 6y=-10 | | 18x-4y=22 | | -27+13y+7n-2y-3n+2= | | 6x-6y=-10 |

Equations solver categories