2x^2-x-160=0

Simple and best practice solution for 2x^2-x-160=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-x-160=0 equation:


Simplifying
2x2 + -1x + -160 = 0

Reorder the terms:
-160 + -1x + 2x2 = 0

Solving
-160 + -1x + 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'.
-80 + -0.5x + x2 = 0

Move the constant term to the right:

Add '80' to each side of the equation.
-80 + -0.5x + 80 + x2 = 0 + 80

Reorder the terms:
-80 + 80 + -0.5x + x2 = 0 + 80

Combine like terms: -80 + 80 = 0
0 + -0.5x + x2 = 0 + 80
-0.5x + x2 = 0 + 80

Combine like terms: 0 + 80 = 80
-0.5x + x2 = 80

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = 80 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 80 + 0.0625

Combine like terms: 80 + 0.0625 = 80.0625
0.0625 + -0.5x + x2 = 80.0625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 80.0625

Calculate the square root of the right side: 8.947765084

Break this problem into two subproblems by setting 
(x + -0.25) equal to 8.947765084 and -8.947765084.

Subproblem 1

x + -0.25 = 8.947765084 Simplifying x + -0.25 = 8.947765084 Reorder the terms: -0.25 + x = 8.947765084 Solving -0.25 + x = 8.947765084 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 8.947765084 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 8.947765084 + 0.25 x = 8.947765084 + 0.25 Combine like terms: 8.947765084 + 0.25 = 9.197765084 x = 9.197765084 Simplifying x = 9.197765084

Subproblem 2

x + -0.25 = -8.947765084 Simplifying x + -0.25 = -8.947765084 Reorder the terms: -0.25 + x = -8.947765084 Solving -0.25 + x = -8.947765084 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -8.947765084 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -8.947765084 + 0.25 x = -8.947765084 + 0.25 Combine like terms: -8.947765084 + 0.25 = -8.697765084 x = -8.697765084 Simplifying x = -8.697765084

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.197765084, -8.697765084}

See similar equations:

| 28m=-28 | | -6+r=z | | -12=-2h+0.2(20-2h) | | 180=5x+(2x+5)+(3x-15) | | 2x(3x-6)=0 | | x-8=-x+32 | | 4v^2-9v=6v | | 10x=8+6x+3 | | 3(x+2)+5x+3=10x+8 | | 3(x+6)=2(3-x) | | -x-8=x+32 | | 14-4(x-5)= | | x-8=x+32 | | F(x)=6x^2-2x | | 9x+2+6x+8+3x-1=180 | | -x+125=x-5 | | 4x+15=-4x-9 | | 180=4x+3x+x | | -w=-8 | | 499(x)=424.15 | | 310-13(9)=x | | 8-c=7 | | 310-13(9)=33 | | 168(x)=147 | | 6=1-2n+5I | | 2x+1=9x | | 4(2h+1)-3(h+4)=3(h-4)-2 | | -4x-24=-84 | | x=4x-40 | | 5=t+3s | | 18x+72=450 | | -(7+5p)+4= |

Equations solver categories