10x^2-5x=8

Simple and best practice solution for 10x^2-5x=8 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^2-5x=8 equation:


Simplifying
10x2 + -5x = 8

Reorder the terms:
-5x + 10x2 = 8

Solving
-5x + 10x2 = 8

Solving for variable 'x'.

Reorder the terms:
-8 + -5x + 10x2 = 8 + -8

Combine like terms: 8 + -8 = 0
-8 + -5x + 10x2 = 0

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

Divide each side by '10'.
-0.8 + -0.5x + x2 = 0

Move the constant term to the right:

Add '0.8' to each side of the equation.
-0.8 + -0.5x + 0.8 + x2 = 0 + 0.8

Reorder the terms:
-0.8 + 0.8 + -0.5x + x2 = 0 + 0.8

Combine like terms: -0.8 + 0.8 = 0.0
0.0 + -0.5x + x2 = 0 + 0.8
-0.5x + x2 = 0 + 0.8

Combine like terms: 0 + 0.8 = 0.8
-0.5x + x2 = 0.8

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 = 0.8 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 0.8 + 0.0625

Combine like terms: 0.8 + 0.0625 = 0.8625
0.0625 + -0.5x + x2 = 0.8625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 0.8625

Calculate the square root of the right side: 0.928708781

Break this problem into two subproblems by setting 
(x + -0.25) equal to 0.928708781 and -0.928708781.

Subproblem 1

x + -0.25 = 0.928708781 Simplifying x + -0.25 = 0.928708781 Reorder the terms: -0.25 + x = 0.928708781 Solving -0.25 + x = 0.928708781 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 = 0.928708781 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 0.928708781 + 0.25 x = 0.928708781 + 0.25 Combine like terms: 0.928708781 + 0.25 = 1.178708781 x = 1.178708781 Simplifying x = 1.178708781

Subproblem 2

x + -0.25 = -0.928708781 Simplifying x + -0.25 = -0.928708781 Reorder the terms: -0.25 + x = -0.928708781 Solving -0.25 + x = -0.928708781 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 = -0.928708781 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -0.928708781 + 0.25 x = -0.928708781 + 0.25 Combine like terms: -0.928708781 + 0.25 = -0.678708781 x = -0.678708781 Simplifying x = -0.678708781

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.178708781, -0.678708781}

See similar equations:

| 6+7=67 | | .25x+7=16 | | d/4=5/3 | | 2(x-2)+6=5(x+4) | | 3k-11=7k+9 | | 2(x-2)+6=5(z+4) | | -15x(x+6)=120 | | -15+x^2=2x | | 4n^2-11n=11 | | 15x^2+90=0 | | 5y+9(15)=3y | | (2x+3)(2x-7)=-16 | | 4n^2+-11n=11 | | X^2+2xy-2y-1=0 | | 3-2i/4-5i | | 4x-13=-9-13x | | 4n-11n=11 | | Log(13x+2)=1+log(x+8) | | 143-p^2=0 | | x-12=x/5 | | 0.7x+(x-3)=0.2x+3 | | X^2+2xy-2xy-1=0 | | 1.6*-1/0.8 | | 6x-14=10-2x | | 3x+2y-4x+5y= | | 3(z-2)=7z+4 | | -0.8t^2+8t-19.2=0 | | 27a^6b/45a^3b^4 | | 3(a-2)=6(a+4)-2a | | 5/(3x^2-5) | | 6k^2=-2k+17 | | 5/3x^2-5 |

Equations solver categories