z^2-9z=-8

Simple and best practice solution for z^2-9z=-8 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^2-9z=-8 equation:


Simplifying
z2 + -9z = -8

Reorder the terms:
-9z + z2 = -8

Solving
-9z + z2 = -8

Solving for variable 'z'.

Reorder the terms:
8 + -9z + z2 = -8 + 8

Combine like terms: -8 + 8 = 0
8 + -9z + z2 = 0

Factor a trinomial.
(1 + -1z)(8 + -1z) = 0

Subproblem 1

Set the factor '(1 + -1z)' equal to zero and attempt to solve: Simplifying 1 + -1z = 0 Solving 1 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1z = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1z = 0 + -1 -1z = 0 + -1 Combine like terms: 0 + -1 = -1 -1z = -1 Divide each side by '-1'. z = 1 Simplifying z = 1

Subproblem 2

Set the factor '(8 + -1z)' equal to zero and attempt to solve: Simplifying 8 + -1z = 0 Solving 8 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1z = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1z = 0 + -8 -1z = 0 + -8 Combine like terms: 0 + -8 = -8 -1z = -8 Divide each side by '-1'. z = 8 Simplifying z = 8

Solution

z = {1, 8}

See similar equations:

| -9x+3y=-30 | | x^2-5x=14 | | 3c^2-18c+27=0 | | 2r^2-24r+72=0 | | s^2-64=0 | | 2x^2-3x=3 | | (t+5)(t-18)=0 | | 4(x-2)=0 | | M=n+20 | | 5v(11v+6)=0 | | (3x+1)(3x-1)=0 | | 2x-8x^2=0 | | z^2-2z-15=0 | | 8+x=-4 | | (x-8)(2x+3)=0 | | -6(y+5)=-3y-3 | | (x-8)(4x+7)=0 | | x^2+2x+1=10x-14 | | -7y+2=75 | | -17=5(y-7)-7y | | (6x-5)(x+3)(3x-5)=0 | | 2w*w=5000 | | -2+4x=-22 | | (x-3)(x+4)=44 | | 10x-14=0 | | 36=4v-8 | | x^4-22x^2=75 | | 4.3x+2.8=11.4 | | 2x-5+x=2x-5+x+5 | | 9x-8y=-24 | | 25x+11y=60 | | 3(4.3)=x(9.2) |

Equations solver categories