x^2-2x-49=0

Simple and best practice solution for x^2-2x-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^2-2x-49=0 equation:


Simplifying
x2 + -2x + -49 = 0

Reorder the terms:
-49 + -2x + x2 = 0

Solving
-49 + -2x + 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 + -2x + 49 + x2 = 0 + 49

Reorder the terms:
-49 + 49 + -2x + x2 = 0 + 49

Combine like terms: -49 + 49 = 0
0 + -2x + x2 = 0 + 49
-2x + x2 = 0 + 49

Combine like terms: 0 + 49 = 49
-2x + x2 = 49

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 = 49 + 1

Reorder the terms:
1 + -2x + x2 = 49 + 1

Combine like terms: 49 + 1 = 50
1 + -2x + x2 = 50

Factor a perfect square on the left side:
(x + -1)(x + -1) = 50

Calculate the square root of the right side: 7.071067812

Break this problem into two subproblems by setting 
(x + -1) equal to 7.071067812 and -7.071067812.

Subproblem 1

x + -1 = 7.071067812 Simplifying x + -1 = 7.071067812 Reorder the terms: -1 + x = 7.071067812 Solving -1 + x = 7.071067812 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 = 7.071067812 + 1 Combine like terms: -1 + 1 = 0 0 + x = 7.071067812 + 1 x = 7.071067812 + 1 Combine like terms: 7.071067812 + 1 = 8.071067812 x = 8.071067812 Simplifying x = 8.071067812

Subproblem 2

x + -1 = -7.071067812 Simplifying x + -1 = -7.071067812 Reorder the terms: -1 + x = -7.071067812 Solving -1 + x = -7.071067812 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 = -7.071067812 + 1 Combine like terms: -1 + 1 = 0 0 + x = -7.071067812 + 1 x = -7.071067812 + 1 Combine like terms: -7.071067812 + 1 = -6.071067812 x = -6.071067812 Simplifying x = -6.071067812

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.071067812, -6.071067812}

See similar equations:

| 4x+2(x+2)= | | 11.8x=18 | | -7(1-4m)=13(3m-9) | | .7x=12 | | 2.4x=1.6 | | 3x^7+5=-6 | | 7x^9-4=12 | | (y-3)(y-2)(y-1)=3y+9 | | t^2-10t+15=0 | | 2(p+2)=1.8p-2-(p+5) | | Ln(x)=45 | | 4x+5(x-4)= | | Lnx=35 | | (y-6)(y-5)=y+43 | | 3x-20=1+26 | | 5(6x+3)=25 | | 2x+7x-18=90 | | 2.3=p+0.6 | | 9h-3h=-18 | | 15y=90+9x | | 5x+2(2x+2)= | | 9x+15y=90 | | 12=6.28r(r+5) | | 9r-7r=20 | | 8z+15=-15 | | 5x^9+4=2 | | M-3=13.8 | | -(1-10t)=-11+8t | | 2x-5=3x-15 | | 5(b+9)=5b+45 | | 4x+4(x-4)= | | 3v-2v=13 |

Equations solver categories