2x^2-5-5x=0

Simple and best practice solution for 2x^2-5-5x=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^2-5-5x=0 equation:


Simplifying
2x2 + -5 + -5x = 0

Reorder the terms:
-5 + -5x + 2x2 = 0

Solving
-5 + -5x + 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'.
-2.5 + -2.5x + x2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + -2.5x + 2.5 + x2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + -2.5x + x2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + -2.5x + x2 = 0 + 2.5
-2.5x + x2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
-2.5x + x2 = 2.5

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = 2.5 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = 2.5 + 1.5625

Combine like terms: 2.5 + 1.5625 = 4.0625
1.5625 + -2.5x + x2 = 4.0625

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = 4.0625

Calculate the square root of the right side: 2.015564437

Break this problem into two subproblems by setting 
(x + -1.25) equal to 2.015564437 and -2.015564437.

Subproblem 1

x + -1.25 = 2.015564437 Simplifying x + -1.25 = 2.015564437 Reorder the terms: -1.25 + x = 2.015564437 Solving -1.25 + x = 2.015564437 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = 2.015564437 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 2.015564437 + 1.25 x = 2.015564437 + 1.25 Combine like terms: 2.015564437 + 1.25 = 3.265564437 x = 3.265564437 Simplifying x = 3.265564437

Subproblem 2

x + -1.25 = -2.015564437 Simplifying x + -1.25 = -2.015564437 Reorder the terms: -1.25 + x = -2.015564437 Solving -1.25 + x = -2.015564437 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = -2.015564437 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -2.015564437 + 1.25 x = -2.015564437 + 1.25 Combine like terms: -2.015564437 + 1.25 = -0.765564437 x = -0.765564437 Simplifying x = -0.765564437

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.265564437, -0.765564437}

See similar equations:

| 9+3y-1=9y+16-4y | | 2.5f=20 | | 4x-2y=0-4x | | 3y+2=10whatisy | | (-9+2.75-3.5)m+9.2= | | X^4+4x^3-2x^2-8x=0 | | -6.4+x-3.8=-2.981 | | (27)/(1/5) | | -145h=14 | | 5+.5x=.5x+10 | | 2(5+1)=102 | | 3x+21=117 | | 5n^2-7n+-6=0 | | 16x^2+25y^2+64x-336=0 | | 8x-4=3x+4 | | 160+2x=20+3x | | -2(w+6)+6=4(w-3) | | -14+3n=4 | | 160+2x=20-3x | | 20=5x+f | | 3=k/6 | | 15x+450=10x+470 | | 15=0.02z | | (2/6)x(2/6) | | 13b+5.2=-304.2 | | 3t+10=-t-4+2t | | x-16+x=180 | | =[(x+1)-(y-3)] | | 16-x+x=180 | | 5/12b=75 | | 3x-9=-3+5x | | -8.3v+10.7=131.3 |

Equations solver categories