x^2-2x-210=0

Simple and best practice solution for x^2-2x-210=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-210=0 equation:


Simplifying
x2 + -2x + -210 = 0

Reorder the terms:
-210 + -2x + x2 = 0

Solving
-210 + -2x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '210' to each side of the equation.
-210 + -2x + 210 + x2 = 0 + 210

Reorder the terms:
-210 + 210 + -2x + x2 = 0 + 210

Combine like terms: -210 + 210 = 0
0 + -2x + x2 = 0 + 210
-2x + x2 = 0 + 210

Combine like terms: 0 + 210 = 210
-2x + x2 = 210

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 = 210 + 1

Reorder the terms:
1 + -2x + x2 = 210 + 1

Combine like terms: 210 + 1 = 211
1 + -2x + x2 = 211

Factor a perfect square on the left side:
(x + -1)(x + -1) = 211

Calculate the square root of the right side: 14.525839046

Break this problem into two subproblems by setting 
(x + -1) equal to 14.525839046 and -14.525839046.

Subproblem 1

x + -1 = 14.525839046 Simplifying x + -1 = 14.525839046 Reorder the terms: -1 + x = 14.525839046 Solving -1 + x = 14.525839046 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 = 14.525839046 + 1 Combine like terms: -1 + 1 = 0 0 + x = 14.525839046 + 1 x = 14.525839046 + 1 Combine like terms: 14.525839046 + 1 = 15.525839046 x = 15.525839046 Simplifying x = 15.525839046

Subproblem 2

x + -1 = -14.525839046 Simplifying x + -1 = -14.525839046 Reorder the terms: -1 + x = -14.525839046 Solving -1 + x = -14.525839046 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 = -14.525839046 + 1 Combine like terms: -1 + 1 = 0 0 + x = -14.525839046 + 1 x = -14.525839046 + 1 Combine like terms: -14.525839046 + 1 = -13.525839046 x = -13.525839046 Simplifying x = -13.525839046

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.525839046, -13.525839046}

See similar equations:

| sqrt(2x+1)=6 | | 46=2(9+w) | | -6+8r=-(6-8r) | | 7x-(2x-11)=41 | | B=zs+y | | 8y+12=2y+114 | | 5(x-3)=2(2x+1) | | 3k+5=18 | | S^2-6.5s+6.0625=0 | | 6x-(-3)=(-4)-x | | 9x=4x-80 | | 5k+5-6=6 | | 14x+5=-(8x-3)+8 | | -15x+-15=-14x | | 7(1-4n)=91 | | 15+.25m=20+0.05m | | log[2](9x+15)=2+log[2](x+5) | | 2/5=3/5+3x | | 10m+63=m | | 3w+3-2w=5-3 | | 2b^2+7b+3=0 | | 13m=o | | 2x-30=150 | | 6x-5y-10=12 | | 3x^2-18x+22=0factor | | 4x-3y-2z=14 | | 5.5(3.5p+6)=51 | | 16+2x=-8x+6 | | 2n+20=6n | | 7-2x=-5x+7 | | -88=-4 | | 1/2(6x+18)=1/3(9x+27) |

Equations solver categories