5x+x^2-3=0

Simple and best practice solution for 5x+x^2-3=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 5x+x^2-3=0 equation:


Simplifying
5x + x2 + -3 = 0

Reorder the terms:
-3 + 5x + x2 = 0

Solving
-3 + 5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 5x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + 5x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 5x + x2 = 0 + 3
5x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
5x + x2 = 3

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 = 3 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 3 + 6.25

Combine like terms: 3 + 6.25 = 9.25
6.25 + 5x + x2 = 9.25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 9.25

Calculate the square root of the right side: 3.041381265

Break this problem into two subproblems by setting 
(x + 2.5) equal to 3.041381265 and -3.041381265.

Subproblem 1

x + 2.5 = 3.041381265 Simplifying x + 2.5 = 3.041381265 Reorder the terms: 2.5 + x = 3.041381265 Solving 2.5 + x = 3.041381265 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 = 3.041381265 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 3.041381265 + -2.5 x = 3.041381265 + -2.5 Combine like terms: 3.041381265 + -2.5 = 0.541381265 x = 0.541381265 Simplifying x = 0.541381265

Subproblem 2

x + 2.5 = -3.041381265 Simplifying x + 2.5 = -3.041381265 Reorder the terms: 2.5 + x = -3.041381265 Solving 2.5 + x = -3.041381265 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 = -3.041381265 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -3.041381265 + -2.5 x = -3.041381265 + -2.5 Combine like terms: -3.041381265 + -2.5 = -5.541381265 x = -5.541381265 Simplifying x = -5.541381265

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.541381265, -5.541381265}

See similar equations:

| 36x^2-24=96x-39 | | -10=z-32+6 | | 3.05=x+10 | | (4x-8)+(6x+13)+90=180 | | 36m=432 | | 7t-1=13 | | 2(a-4)+6a=48 | | 5b-6-11b-8= | | 3(2)-11=2(y-4) | | 2x-1=2x+3 | | 11-5(6x-2)=81 | | x^4+2x^2-8x+1=0 | | 9m=8m+56 | | 2q+1=17 | | 23+h-9= | | bx=9b | | 1r+15=-4 | | 5+t-4t^2=0 | | 1.5*10= | | 100x-x^2=500 | | 4x-3y=65 | | (2m-3n)i+(m+4n)=13+7i | | 17+p=-3 | | 8x=y+21 | | -18x^2=48x+14 | | 1t+-1=18 | | t^2-t-5=0 | | (2x+9)=90 | | 3x+0.05=x+0.10 | | 6x^2+x=4 | | 1.4y+5-4.2-5y+z= | | 9x+-6=8x+10 |

Equations solver categories