x^2-20x-35=0

Simple and best practice solution for x^2-20x-35=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^2-20x-35=0 equation:


Simplifying
x2 + -20x + -35 = 0

Reorder the terms:
-35 + -20x + x2 = 0

Solving
-35 + -20x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '35' to each side of the equation.
-35 + -20x + 35 + x2 = 0 + 35

Reorder the terms:
-35 + 35 + -20x + x2 = 0 + 35

Combine like terms: -35 + 35 = 0
0 + -20x + x2 = 0 + 35
-20x + x2 = 0 + 35

Combine like terms: 0 + 35 = 35
-20x + x2 = 35

The x term is -20x.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20x + 100 + x2 = 35 + 100

Reorder the terms:
100 + -20x + x2 = 35 + 100

Combine like terms: 35 + 100 = 135
100 + -20x + x2 = 135

Factor a perfect square on the left side:
(x + -10)(x + -10) = 135

Calculate the square root of the right side: 11.618950039

Break this problem into two subproblems by setting 
(x + -10) equal to 11.618950039 and -11.618950039.

Subproblem 1

x + -10 = 11.618950039 Simplifying x + -10 = 11.618950039 Reorder the terms: -10 + x = 11.618950039 Solving -10 + x = 11.618950039 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = 11.618950039 + 10 Combine like terms: -10 + 10 = 0 0 + x = 11.618950039 + 10 x = 11.618950039 + 10 Combine like terms: 11.618950039 + 10 = 21.618950039 x = 21.618950039 Simplifying x = 21.618950039

Subproblem 2

x + -10 = -11.618950039 Simplifying x + -10 = -11.618950039 Reorder the terms: -10 + x = -11.618950039 Solving -10 + x = -11.618950039 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = -11.618950039 + 10 Combine like terms: -10 + 10 = 0 0 + x = -11.618950039 + 10 x = -11.618950039 + 10 Combine like terms: -11.618950039 + 10 = -1.618950039 x = -1.618950039 Simplifying x = -1.618950039

Solution

The solution to the problem is based on the solutions from the subproblems. x = {21.618950039, -1.618950039}

See similar equations:

| =9x^2+29+6 | | 1/8(9+h)=4 | | 14=-v/2+6 | | n/37-n=8+1/37-n | | x-28.9=-17 | | 2(x-4)=-6x+56 | | 5/9x=-1/9 | | -8(0.1x+0.3)-1.1=-0.3 | | 1z=12/14 | | -3(5p+5)-2(5-17p)=3(5+6p) | | -5/3x=5/8 | | z-3z=5z-5-z | | Y/3+2=7 | | n/5+9=22 | | 1/2n+1/4n=1/5 | | 6.112b-5.8+5.3b= | | 20y-[11(3-y)-11]=5y+2(5-3y) | | 5a-5=7+1a | | z-9z=7z-9-z | | 2x+3(x-7)=5(x-4)-1 | | 33t=264 | | 27t+17-5t=20t-28+17 | | 5x+4=-37 | | 3-(3n-7)=-8 | | z-3z=8z-1-z | | (9/x-5)+(1/x)=(9/x-5) | | 2x+1/8-1/4=x-3/2+1 | | (8/x)+(1/3)=(9/x) | | 19/22x-1/2x=4 | | 8/3W=8/9 | | 5(3+x)=5(4x-1)-40 | | 1/3(5x+6)-1/2(x+7)=2 |

Equations solver categories