x^2-20x-3=

Simple and best practice solution for x^2-20x-3= 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-3= equation:


Simplifying
x2 + -20x + -3 = 0

Reorder the terms:
-3 + -20x + x2 = 0

Solving
-3 + -20x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -20x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + -20x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -20x + x2 = 0 + 3
-20x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
-20x + x2 = 3

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 = 3 + 100

Reorder the terms:
100 + -20x + x2 = 3 + 100

Combine like terms: 3 + 100 = 103
100 + -20x + x2 = 103

Factor a perfect square on the left side:
(x + -10)(x + -10) = 103

Calculate the square root of the right side: 10.148891565

Break this problem into two subproblems by setting 
(x + -10) equal to 10.148891565 and -10.148891565.

Subproblem 1

x + -10 = 10.148891565 Simplifying x + -10 = 10.148891565 Reorder the terms: -10 + x = 10.148891565 Solving -10 + x = 10.148891565 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 = 10.148891565 + 10 Combine like terms: -10 + 10 = 0 0 + x = 10.148891565 + 10 x = 10.148891565 + 10 Combine like terms: 10.148891565 + 10 = 20.148891565 x = 20.148891565 Simplifying x = 20.148891565

Subproblem 2

x + -10 = -10.148891565 Simplifying x + -10 = -10.148891565 Reorder the terms: -10 + x = -10.148891565 Solving -10 + x = -10.148891565 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 = -10.148891565 + 10 Combine like terms: -10 + 10 = 0 0 + x = -10.148891565 + 10 x = -10.148891565 + 10 Combine like terms: -10.148891565 + 10 = -0.148891565 x = -0.148891565 Simplifying x = -0.148891565

Solution

The solution to the problem is based on the solutions from the subproblems. x = {20.148891565, -0.148891565}

See similar equations:

| -5x-y=114 | | (5+z)(5z+3)=0 | | 5u^2-39u-8=0 | | 934+1x=3x | | 2x+3/3-7x/6=2x/9+2 | | 2x^2+x+3= | | 40x+7.50=1250 | | 2x+3/3=2y-4 | | -1-4x=6x+9 | | 20-1/5d=3/10d+16 | | 32+72x=71x+36 | | x/5=y/4-2 | | -5x+3=5x-67 | | 8x=4x+24 | | (x+12)(x-10)=0 | | 8-4=7x-3 | | 1x+1x+3=-3+2x+6 | | 2+5x-7x=-8 | | 2+5x-7=-8 | | 9x^2+171x+756=0 | | 2+5x-7=-48 | | 0.5x=0.2x+75 | | 2x+35=3x+13 | | 5v^2-39v-8=0 | | -3x+4+4x=-3 | | w=-2p+py | | 12-4(2x-7)=3x+7 | | n/5=-3 | | w=p(y-2) | | .66(21-3x)=.5(8-4x) | | 16+5x=20+4x | | .032-p=.017-.09 |

Equations solver categories