5=x^2+5x

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


Simplifying
5 = x2 + 5x

Reorder the terms:
5 = 5x + x2

Solving
5 = 5x + x2

Solving for variable 'x'.

Reorder the terms:
5 + -5x + -1x2 = 5x + -5x + x2 + -1x2

Combine like terms: 5x + -5x = 0
5 + -5x + -1x2 = 0 + x2 + -1x2
5 + -5x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
5 + -5x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-5 + 5x + x2 = 0

Move the constant term to the right:

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

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

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

Combine like terms: 0 + 5 = 5
5x + x2 = 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 = 5 + 6.25

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

Combine like terms: 5 + 6.25 = 11.25
6.25 + 5x + x2 = 11.25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 11.25

Calculate the square root of the right side: 3.354101966

Break this problem into two subproblems by setting 
(x + 2.5) equal to 3.354101966 and -3.354101966.

Subproblem 1

x + 2.5 = 3.354101966 Simplifying x + 2.5 = 3.354101966 Reorder the terms: 2.5 + x = 3.354101966 Solving 2.5 + x = 3.354101966 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 = 3.354101966 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 3.354101966 + -2.5 x = 3.354101966 + -2.5 Combine like terms: 3.354101966 + -2.5 = 0.854101966 x = 0.854101966 Simplifying x = 0.854101966

Subproblem 2

x + 2.5 = -3.354101966 Simplifying x + 2.5 = -3.354101966 Reorder the terms: 2.5 + x = -3.354101966 Solving 2.5 + x = -3.354101966 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 = -3.354101966 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -3.354101966 + -2.5 x = -3.354101966 + -2.5 Combine like terms: -3.354101966 + -2.5 = -5.854101966 x = -5.854101966 Simplifying x = -5.854101966

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.854101966, -5.854101966}

See similar equations:

| 3x+15-7x=-7 | | 0=12x^2-96x+144 | | 5/3q-9=1 | | -5a-10=5(7a+5)-5 | | (f/4)-5=1 | | (3x+4)(x-1)=-6 | | -x^2=49 | | -2=2y+10 | | 4(1-6b)=-10(-2b+4) | | -80+9x=82 | | 4(1-6b)=-10(-2b+40) | | -30-5X=20 | | .25t-4t-15=0 | | 12y+3=5 | | -11.2/x=5.6 | | X=670000+.055x | | -3(5a-9)=-6(1+a)-6a | | 7(8a+9b)= | | 2.1y+45.2=3.2-8.4y | | Q^2-48q=0 | | Y+1.4=-3.8 | | 38=8-6/5x | | X-.055x=670000 | | (12v+14)+10v=80 | | -3x-6(5x-7)=177 | | 10(-8+8n)-8=0 | | G^2-21t-20=0 | | (3x+y)(x+-6y)= | | 27=-3x-9 | | (+7)+(+2)+(-8)= | | 14x+28=20 | | f(x)=3x-14 |

Equations solver categories