z^2-2z-48=(2-8)(z+0)

Simple and best practice solution for z^2-2z-48=(2-8)(z+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 z^2-2z-48=(2-8)(z+0) equation:


Simplifying
z2 + -2z + -48 = (2 + -8)(z + 0)

Reorder the terms:
-48 + -2z + z2 = (2 + -8)(z + 0)

Combine like terms: 2 + -8 = -6
-48 + -2z + z2 = (-6)(z + 0)

Reorder the terms:
-48 + -2z + z2 = -6(0 + z)
Remove the zero:
-48 + -2z + z2 = -6(z)

Solving
-48 + -2z + z2 = -6z

Solving for variable 'z'.

Reorder the terms:
-48 + -2z + 6z + z2 = -6z + 6z

Combine like terms: -2z + 6z = 4z
-48 + 4z + z2 = -6z + 6z

Combine like terms: -6z + 6z = 0
-48 + 4z + z2 = 0

Begin completing the square.

Move the constant term to the right:

Add '48' to each side of the equation.
-48 + 4z + 48 + z2 = 0 + 48

Reorder the terms:
-48 + 48 + 4z + z2 = 0 + 48

Combine like terms: -48 + 48 = 0
0 + 4z + z2 = 0 + 48
4z + z2 = 0 + 48

Combine like terms: 0 + 48 = 48
4z + z2 = 48

The z term is 4z.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4z + 4 + z2 = 48 + 4

Reorder the terms:
4 + 4z + z2 = 48 + 4

Combine like terms: 48 + 4 = 52
4 + 4z + z2 = 52

Factor a perfect square on the left side:
(z + 2)(z + 2) = 52

Calculate the square root of the right side: 7.211102551

Break this problem into two subproblems by setting 
(z + 2) equal to 7.211102551 and -7.211102551.

Subproblem 1

z + 2 = 7.211102551 Simplifying z + 2 = 7.211102551 Reorder the terms: 2 + z = 7.211102551 Solving 2 + z = 7.211102551 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + z = 7.211102551 + -2 Combine like terms: 2 + -2 = 0 0 + z = 7.211102551 + -2 z = 7.211102551 + -2 Combine like terms: 7.211102551 + -2 = 5.211102551 z = 5.211102551 Simplifying z = 5.211102551

Subproblem 2

z + 2 = -7.211102551 Simplifying z + 2 = -7.211102551 Reorder the terms: 2 + z = -7.211102551 Solving 2 + z = -7.211102551 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + z = -7.211102551 + -2 Combine like terms: 2 + -2 = 0 0 + z = -7.211102551 + -2 z = -7.211102551 + -2 Combine like terms: -7.211102551 + -2 = -9.211102551 z = -9.211102551 Simplifying z = -9.211102551

Solution

The solution to the problem is based on the solutions from the subproblems. z = {5.211102551, -9.211102551}

See similar equations:

| 3x+(x-20)+x=170 | | -2(x^2-8)=-112 | | A=CD-B | | 10.9+22.1-61= | | 39+4y-9=14y-12-3y | | 8s^2-22s+5= | | BD-C=A | | CD-B=A | | 60x-10x^2=0 | | 8s-22s+5= | | 5sin(4x)+10sin(2x)=0 | | 261-y=(1650-6y)/9 | | an=7(n-1)-12 | | 4(n-6)=3(n+1) | | X^3-10x^2-300x+2000=0 | | 22x^2-41x+12= | | x^2+y^2+z^2-16=0 | | 5x-loge(x)=7 | | 4x-8x+4x=1 | | (261-y)+y=183.3 | | 5x-ln(x)=7 | | 3k+34=89 | | f(x)=1/2(x-5)^2 | | X^3+4x^2-25x=100 | | y=1/2(x-5)^2 | | X+y=261 | | y=21+2x | | 9x+6y=251 | | 21+2x= | | X+8=2x+34 | | 44-t= | | 20r^2+13r-15= |

Equations solver categories