x*x+x-49=0

Simple and best practice solution for x*x+x-49=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 x*x+x-49=0 equation:


Simplifying
x * x + x + -49 = 0

Multiply x * x
x2 + x + -49 = 0

Reorder the terms:
-49 + x + x2 = 0

Solving
-49 + x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '49' to each side of the equation.
-49 + x + 49 + x2 = 0 + 49

Reorder the terms:
-49 + 49 + x + x2 = 0 + 49

Combine like terms: -49 + 49 = 0
0 + x + x2 = 0 + 49
x + x2 = 0 + 49

Combine like terms: 0 + 49 = 49
x + x2 = 49

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
x + 0.25 + x2 = 49 + 0.25

Reorder the terms:
0.25 + x + x2 = 49 + 0.25

Combine like terms: 49 + 0.25 = 49.25
0.25 + x + x2 = 49.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 49.25

Calculate the square root of the right side: 7.017834424

Break this problem into two subproblems by setting 
(x + 0.5) equal to 7.017834424 and -7.017834424.

Subproblem 1

x + 0.5 = 7.017834424 Simplifying x + 0.5 = 7.017834424 Reorder the terms: 0.5 + x = 7.017834424 Solving 0.5 + x = 7.017834424 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 7.017834424 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 7.017834424 + -0.5 x = 7.017834424 + -0.5 Combine like terms: 7.017834424 + -0.5 = 6.517834424 x = 6.517834424 Simplifying x = 6.517834424

Subproblem 2

x + 0.5 = -7.017834424 Simplifying x + 0.5 = -7.017834424 Reorder the terms: 0.5 + x = -7.017834424 Solving 0.5 + x = -7.017834424 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -7.017834424 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -7.017834424 + -0.5 x = -7.017834424 + -0.5 Combine like terms: -7.017834424 + -0.5 = -7.517834424 x = -7.517834424 Simplifying x = -7.517834424

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.517834424, -7.517834424}

See similar equations:

| 4/7n+3/8=149/56 | | 1/3w+1/2=11/18 | | 2m+4=23/4 | | -8x+10y=0 | | 2/7n+1=5/7 | | -a+3=5/2 | | 3/5w+10=86/5 | | -2/3m+8=32/3 | | 2d+8=-14 | | -1/5t+3=14/5 | | -2/5d-8/9=-37/45 | | -1/3x+2=-2x-3 | | 1/7b+6/7=46/49 | | 2/3+1/5d=38/75 | | 1/2d+8=13 | | 7n+4=25 | | 2+4k=-18 | | -1/7b+1/10=-53/70 | | -4/9-2w=-35/18 | | 9+6w=93/11 | | -d+1=11/9 | | 3-3/4a=3 | | 1+3/7x=37/28 | | 8+2n=-16 | | -4/5+a=1/5 | | 1/2n+1/7=4/77 | | 2a+1=-21 | | 7/8+2a=167/8 | | 5k-1/2=9/2 | | 5/7+1/7w=8/7 | | -n-6=-37/6 | | 1/2+5m=91/2 |

Equations solver categories