5+2x-x^2=0

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


Simplifying
5 + 2x + -1x2 = 0

Solving
5 + 2x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
-5 + -2x + x2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -2x + 5 + x2 = 0 + 5

Reorder the terms:
-5 + 5 + -2x + x2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -2x + x2 = 0 + 5
-2x + x2 = 0 + 5

Combine like terms: 0 + 5 = 5
-2x + x2 = 5

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 5 + 1

Reorder the terms:
1 + -2x + x2 = 5 + 1

Combine like terms: 5 + 1 = 6
1 + -2x + x2 = 6

Factor a perfect square on the left side:
(x + -1)(x + -1) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(x + -1) equal to 2.449489743 and -2.449489743.

Subproblem 1

x + -1 = 2.449489743 Simplifying x + -1 = 2.449489743 Reorder the terms: -1 + x = 2.449489743 Solving -1 + x = 2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 2.449489743 + 1 Combine like terms: -1 + 1 = 0 0 + x = 2.449489743 + 1 x = 2.449489743 + 1 Combine like terms: 2.449489743 + 1 = 3.449489743 x = 3.449489743 Simplifying x = 3.449489743

Subproblem 2

x + -1 = -2.449489743 Simplifying x + -1 = -2.449489743 Reorder the terms: -1 + x = -2.449489743 Solving -1 + x = -2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -2.449489743 + 1 Combine like terms: -1 + 1 = 0 0 + x = -2.449489743 + 1 x = -2.449489743 + 1 Combine like terms: -2.449489743 + 1 = -1.449489743 x = -1.449489743 Simplifying x = -1.449489743

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.449489743, -1.449489743}

See similar equations:

| 7-r/2=-10 | | -48-4x=8x+20 | | -7=b/4-3 | | y=5x-7/6 | | 5(2x+1)=5x-7x | | x+90+30=180 | | 6x+4+8x=7+4x+27 | | -9-3=24 | | 4x+15=x+25 | | x+4y+2z=60 | | x=4y/10 | | -6x+42=6x-42 | | -0.2x+8.49=-0.4x+1.49 | | w^2+1=2w | | -4(-2)+b=4 | | 5*5/6 | | 8x-9+7x=9+9x+30 | | x+110=180 | | x+110+90=180 | | 2z+4y+x=63 | | 1/3(3x-2)=-5/3-1/3 | | 75-3x=42x+15 | | -5y-7=-4y-8 | | 4ax-2y=3ax-4y | | 1+1=-2(9x-1) | | 4/5y-3y=33 | | 2(4x+5)=-23+9 | | 2x+17=7x+2 | | 6x+12=4x+10 | | 3/5p=6 | | 2/x+6+3/x-8 | | F=9c+32 |

Equations solver categories