x^2-6x-16=6

Simple and best practice solution for x^2-6x-16=6 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^2-6x-16=6 equation:


Simplifying
x2 + -6x + -16 = 6

Reorder the terms:
-16 + -6x + x2 = 6

Solving
-16 + -6x + x2 = 6

Solving for variable 'x'.

Reorder the terms:
-16 + -6 + -6x + x2 = 6 + -6

Combine like terms: -16 + -6 = -22
-22 + -6x + x2 = 6 + -6

Combine like terms: 6 + -6 = 0
-22 + -6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '22' to each side of the equation.
-22 + -6x + 22 + x2 = 0 + 22

Reorder the terms:
-22 + 22 + -6x + x2 = 0 + 22

Combine like terms: -22 + 22 = 0
0 + -6x + x2 = 0 + 22
-6x + x2 = 0 + 22

Combine like terms: 0 + 22 = 22
-6x + x2 = 22

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = 22 + 9

Reorder the terms:
9 + -6x + x2 = 22 + 9

Combine like terms: 22 + 9 = 31
9 + -6x + x2 = 31

Factor a perfect square on the left side:
(x + -3)(x + -3) = 31

Calculate the square root of the right side: 5.567764363

Break this problem into two subproblems by setting 
(x + -3) equal to 5.567764363 and -5.567764363.

Subproblem 1

x + -3 = 5.567764363 Simplifying x + -3 = 5.567764363 Reorder the terms: -3 + x = 5.567764363 Solving -3 + x = 5.567764363 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 5.567764363 + 3 Combine like terms: -3 + 3 = 0 0 + x = 5.567764363 + 3 x = 5.567764363 + 3 Combine like terms: 5.567764363 + 3 = 8.567764363 x = 8.567764363 Simplifying x = 8.567764363

Subproblem 2

x + -3 = -5.567764363 Simplifying x + -3 = -5.567764363 Reorder the terms: -3 + x = -5.567764363 Solving -3 + x = -5.567764363 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -5.567764363 + 3 Combine like terms: -3 + 3 = 0 0 + x = -5.567764363 + 3 x = -5.567764363 + 3 Combine like terms: -5.567764363 + 3 = -2.567764363 x = -2.567764363 Simplifying x = -2.567764363

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.567764363, -2.567764363}

See similar equations:

| 3/4c-5/6=5/8 | | x^2-6x-16=16 | | 6x+y=72 | | 2(1-2x)-x=-4x+8 | | 4x-4(5x-2)=2x-7 | | 2x^4+x^3-11x^2+12x=0 | | a+b+a-b=180 | | w^2-8w+16=64 | | 3x+6y-2=0 | | 120/10=2n | | 9/5x=81 | | X-5(3x+7)= | | 2/1=8/x | | 3+4y=12-3 | | 4.9t^2-30t-40=0 | | -8n+8=-4n-4 | | 3p^2+6p+45=9 | | -5+25=m-4 | | 3(x-5)=7x+9 | | (((x^1/2)(y^(3/4)))/((y^(4/7))(x^(7/8)))) | | (x)x(2m)= | | 3/4=4x-4 | | 8w^2-8w= | | 60y+8y-4=0 | | h=30t-4.9t^2 | | 3(a+7)=21-7a | | 3+5n=38 | | (4/7)= | | (x)(2m)= | | 5/x=15/4 | | 3x-2x^2=-2 | | 14=4t+(-14) |

Equations solver categories