x*x+5x=10

Simple and best practice solution for x*x+5x=10 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 x*x+5x=10 equation:


Simplifying
x * x + 5x = 10

Multiply x * x
x2 + 5x = 10

Reorder the terms:
5x + x2 = 10

Solving
5x + x2 = 10

Solving for variable 'x'.

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

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

Begin completing the square.

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 5x + 10 + x2 = 0 + 10

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

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

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

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = 10 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 10 + 6.25

Combine like terms: 10 + 6.25 = 16.25
6.25 + 5x + x2 = 16.25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 16.25

Calculate the square root of the right side: 4.031128874

Break this problem into two subproblems by setting 
(x + 2.5) equal to 4.031128874 and -4.031128874.

Subproblem 1

x + 2.5 = 4.031128874 Simplifying x + 2.5 = 4.031128874 Reorder the terms: 2.5 + x = 4.031128874 Solving 2.5 + x = 4.031128874 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 4.031128874 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 4.031128874 + -2.5 x = 4.031128874 + -2.5 Combine like terms: 4.031128874 + -2.5 = 1.531128874 x = 1.531128874 Simplifying x = 1.531128874

Subproblem 2

x + 2.5 = -4.031128874 Simplifying x + 2.5 = -4.031128874 Reorder the terms: 2.5 + x = -4.031128874 Solving 2.5 + x = -4.031128874 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -4.031128874 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -4.031128874 + -2.5 x = -4.031128874 + -2.5 Combine like terms: -4.031128874 + -2.5 = -6.531128874 x = -6.531128874 Simplifying x = -6.531128874

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.531128874, -6.531128874}

See similar equations:

| 10+.25x=.35x | | 4-20=4a | | 2x+7-3x=9 | | 4.9t^2-6t-6=0 | | c-5=2-3 | | 7t-20=23 | | -1+6-5=-3a+4a | | 8h-25=450 | | 28x^2-40x+11=0 | | t^2+3t+11=0 | | 4(z-5)+5=-9(z+3)+2 | | 7x+9=x-1 | | 8t+7t=44-15+31 | | 11y-6y-4=72.85 | | x+(0.1x)=200 | | 5d+2d-4d-3c= | | 12g-12g= | | -4x-2y=-26 | | -.35x+x=55 | | 25b^2-5b^4= | | 85.99t=3s+17.26 | | 2(2y+8)=8 | | 9t^2-3t^4= | | x^2-5ln(x)=1 | | -12.9+7.4x=35.2 | | -b-3b-b= | | (-7n)=(-294) | | 20-x=26+-4x | | 3(3y-2)=30 | | 4(3k-1)=20 | | 3(n-2)=6 | | 3t+8t=12-18+61 |

Equations solver categories