x^2+5x=2.5

Simple and best practice solution for x^2+5x=2.5 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^2+5x=2.5 equation:


Simplifying
x2 + 5x = 2.5

Reorder the terms:
5x + x2 = 2.5

Solving
5x + x2 = 2.5

Solving for variable 'x'.

Reorder the terms:
-2.5 + 5x + x2 = 2.5 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
-2.5 + 5x + x2 = 0.0

Begin completing the square.

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + 5x + 2.5 + x2 = 0.0 + 2.5

Reorder the terms:
-2.5 + 2.5 + 5x + x2 = 0.0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 5x + x2 = 0.0 + 2.5
5x + x2 = 0.0 + 2.5

Combine like terms: 0.0 + 2.5 = 2.5
5x + x2 = 2.5

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 = 2.5 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 2.5 + 6.25

Combine like terms: 2.5 + 6.25 = 8.75
6.25 + 5x + x2 = 8.75

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 8.75

Calculate the square root of the right side: 2.958039892

Break this problem into two subproblems by setting 
(x + 2.5) equal to 2.958039892 and -2.958039892.

Subproblem 1

x + 2.5 = 2.958039892 Simplifying x + 2.5 = 2.958039892 Reorder the terms: 2.5 + x = 2.958039892 Solving 2.5 + x = 2.958039892 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 = 2.958039892 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 2.958039892 + -2.5 x = 2.958039892 + -2.5 Combine like terms: 2.958039892 + -2.5 = 0.458039892 x = 0.458039892 Simplifying x = 0.458039892

Subproblem 2

x + 2.5 = -2.958039892 Simplifying x + 2.5 = -2.958039892 Reorder the terms: 2.5 + x = -2.958039892 Solving 2.5 + x = -2.958039892 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 = -2.958039892 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -2.958039892 + -2.5 x = -2.958039892 + -2.5 Combine like terms: -2.958039892 + -2.5 = -5.458039892 x = -5.458039892 Simplifying x = -5.458039892

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.458039892, -5.458039892}

See similar equations:

| 7y-27=18+8y | | a/4-=9 | | 2.5=f/6 | | f(x)=4x^2+32+11 | | 6x-5x+x-3+2x+7= | | -3x+-5x=-8-4x | | 8z-2=2+7z | | X+15+2x-15+3x-75=180 | | -5(x+3)=17 | | 3x-x/8=3 | | 8x=-5x+12 | | 4.4c+14.99=-19.95+c-14.02 | | -2x^2-4x+11=0 | | 2(3x)=400 | | 40+3x+5x-12=180 | | -7(-3b-8)+5=187 | | g/3-0.9=-o.4 | | 2x^2-4=-11 | | 17v+11=20v-13 | | 1+6n=-14 | | 8/36y12/45 | | -8x+-48=-23 | | 19h+12=-20+11h+10h | | 5n^2=3n | | (4x+5)(4x-5)=n | | 2x^5+x^3+5x-6=0 | | 4(a+3)=29+62 | | 2+20g=2+13g | | 80r^3-48r^2-10r+6=0 | | 426=n+185 | | -8z+4=-5-7z | | 2*x+1=3 |

Equations solver categories