10x^2-2x-5=0

Simple and best practice solution for 10x^2-2x-5=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 10x^2-2x-5=0 equation:


Simplifying
10x2 + -2x + -5 = 0

Reorder the terms:
-5 + -2x + 10x2 = 0

Solving
-5 + -2x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
-0.5 + -0.2x + x2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + -0.2x + 0.5 + x2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + -0.2x + x2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + -0.2x + x2 = 0 + 0.5
-0.2x + x2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
-0.2x + x2 = 0.5

The x term is -0.2x.  Take half its coefficient (-0.1).
Square it (0.01) and add it to both sides.

Add '0.01' to each side of the equation.
-0.2x + 0.01 + x2 = 0.5 + 0.01

Reorder the terms:
0.01 + -0.2x + x2 = 0.5 + 0.01

Combine like terms: 0.5 + 0.01 = 0.51
0.01 + -0.2x + x2 = 0.51

Factor a perfect square on the left side:
(x + -0.1)(x + -0.1) = 0.51

Calculate the square root of the right side: 0.714142843

Break this problem into two subproblems by setting 
(x + -0.1) equal to 0.714142843 and -0.714142843.

Subproblem 1

x + -0.1 = 0.714142843 Simplifying x + -0.1 = 0.714142843 Reorder the terms: -0.1 + x = 0.714142843 Solving -0.1 + x = 0.714142843 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1' to each side of the equation. -0.1 + 0.1 + x = 0.714142843 + 0.1 Combine like terms: -0.1 + 0.1 = 0.0 0.0 + x = 0.714142843 + 0.1 x = 0.714142843 + 0.1 Combine like terms: 0.714142843 + 0.1 = 0.814142843 x = 0.814142843 Simplifying x = 0.814142843

Subproblem 2

x + -0.1 = -0.714142843 Simplifying x + -0.1 = -0.714142843 Reorder the terms: -0.1 + x = -0.714142843 Solving -0.1 + x = -0.714142843 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1' to each side of the equation. -0.1 + 0.1 + x = -0.714142843 + 0.1 Combine like terms: -0.1 + 0.1 = 0.0 0.0 + x = -0.714142843 + 0.1 x = -0.714142843 + 0.1 Combine like terms: -0.714142843 + 0.1 = -0.614142843 x = -0.614142843 Simplifying x = -0.614142843

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.814142843, -0.614142843}

See similar equations:

| -245-53=39-8 | | 9x+81=12*30 | | 25t=5(5+-11) | | (x+4)*(x-2)=-5 | | 6x^2=459-27x | | 6(x-2)-5=-5(-4x+7)-6x | | -19x+23y=-11 | | 27n-36= | | 15a+6=6a-38 | | -3(1-2x)=8x+5 | | n*(n-1)=56 | | n*(n-1)=28 | | x^2-2x=56 | | -3x+8y-21=0 | | 12x+x^2=66 | | 2(x-5)+3=5x+14 | | 9d=-8+8d | | -2f=-f+9 | | 10x+8=24 | | 5m-12=4-2m | | 6x+25=15 | | 3/6=n/30 | | 2s^3+12x^2+32x+25= | | 8/n=16/18 | | 3/5x7/8 | | N/12=5/30 | | 7y-2.75=.5 | | 5/10=20/n | | 6x+2=4x+-7 | | 7/9=n/27 | | 4/6=n/30 | | x^3-5x^2+2x-12=0 |

Equations solver categories