x^2-16x-23=0

Simple and best practice solution for x^2-16x-23=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^2-16x-23=0 equation:


Simplifying
x2 + -16x + -23 = 0

Reorder the terms:
-23 + -16x + x2 = 0

Solving
-23 + -16x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '23' to each side of the equation.
-23 + -16x + 23 + x2 = 0 + 23

Reorder the terms:
-23 + 23 + -16x + x2 = 0 + 23

Combine like terms: -23 + 23 = 0
0 + -16x + x2 = 0 + 23
-16x + x2 = 0 + 23

Combine like terms: 0 + 23 = 23
-16x + x2 = 23

The x term is -16x.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16x + 64 + x2 = 23 + 64

Reorder the terms:
64 + -16x + x2 = 23 + 64

Combine like terms: 23 + 64 = 87
64 + -16x + x2 = 87

Factor a perfect square on the left side:
(x + -8)(x + -8) = 87

Calculate the square root of the right side: 9.327379053

Break this problem into two subproblems by setting 
(x + -8) equal to 9.327379053 and -9.327379053.

Subproblem 1

x + -8 = 9.327379053 Simplifying x + -8 = 9.327379053 Reorder the terms: -8 + x = 9.327379053 Solving -8 + x = 9.327379053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 9.327379053 + 8 Combine like terms: -8 + 8 = 0 0 + x = 9.327379053 + 8 x = 9.327379053 + 8 Combine like terms: 9.327379053 + 8 = 17.327379053 x = 17.327379053 Simplifying x = 17.327379053

Subproblem 2

x + -8 = -9.327379053 Simplifying x + -8 = -9.327379053 Reorder the terms: -8 + x = -9.327379053 Solving -8 + x = -9.327379053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = -9.327379053 + 8 Combine like terms: -8 + 8 = 0 0 + x = -9.327379053 + 8 x = -9.327379053 + 8 Combine like terms: -9.327379053 + 8 = -1.327379053 x = -1.327379053 Simplifying x = -1.327379053

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.327379053, -1.327379053}

See similar equations:

| 8(4x+12)=288 | | -3.2=-55.68 | | 7(3x+5)=7 | | 4(8+x)=44 | | 4x^2+6x=0factor | | 7+2(3x-2)=5x+1 | | 2(4x-2)+1=6(x+1) | | 100-x+40+2x=180 | | 3(2x+6)=108 | | 6(6x+10)=384 | | 12=-8v+4(4v-6) | | x^2-16-23=0 | | 6y^2-3y+5y^2-7y= | | 3x+7-x=5x-1 | | 5(x+7)=80 | | 5w+18=23 | | 2(x-3)+5=3(x-2)+5 | | 8(6x-2)=320 | | 137-6x=21x+23 | | 9(x-3)=81 | | 5(5x+9)=170 | | 7m+3-4y=-3 | | 22-x=7x-2 | | 3(5x+1)=10x+5x | | 3x+7=6x+(25) | | 2x=3x-12 | | .3a+(.2a-.5)+.2(a+2)=1.3 | | -14+x=-9-5x+4x | | 4n-10n+8=2(4-3n) | | 21y=16y-30 | | 8(6x-11)=296 | | -12+3(a+5)-a=-3 |

Equations solver categories