z(z+7)=18

Simple and best practice solution for z(z+7)=18 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(z+7)=18 equation:


Simplifying
z(z + 7) = 18

Reorder the terms:
z(7 + z) = 18
(7 * z + z * z) = 18
(7z + z2) = 18

Solving
7z + z2 = 18

Solving for variable 'z'.

Reorder the terms:
-18 + 7z + z2 = 18 + -18

Combine like terms: 18 + -18 = 0
-18 + 7z + z2 = 0

Factor a trinomial.
(-9 + -1z)(2 + -1z) = 0

Subproblem 1

Set the factor '(-9 + -1z)' equal to zero and attempt to solve: Simplifying -9 + -1z = 0 Solving -9 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1z = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1z = 0 + 9 -1z = 0 + 9 Combine like terms: 0 + 9 = 9 -1z = 9 Divide each side by '-1'. z = -9 Simplifying z = -9

Subproblem 2

Set the factor '(2 + -1z)' equal to zero and attempt to solve: Simplifying 2 + -1z = 0 Solving 2 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1z = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1z = 0 + -2 -1z = 0 + -2 Combine like terms: 0 + -2 = -2 -1z = -2 Divide each side by '-1'. z = 2 Simplifying z = 2

Solution

z = {-9, 2}

See similar equations:

| -82+3x=-x+34 | | 2(2x+1)=4x+5 | | -7+4(2n-1)=2n+37 | | 64+2y-x=180 | | m=n-15 | | -88-10x=94-3x | | (5x+4w)(5x-4w)= | | X+35=-76 | | 3(2e-8)=5 | | -5(5x+5)-2x-3=-136 | | 28X+8X^2=0 | | 6x-21=6x+38 | | (-2x-4)2=-98 | | -4(-2x+5)-2x+2=-30 | | 2r^3-3r^2+2R-3=0 | | (5-3v)= | | 2=5(x-5)+4-4x | | -5(5x+1)+3x+1=-180 | | (w-8)(2w+10)= | | 3y+1=9y-1 | | 90-9y=90 | | -4(2x+3)+3x-4=-1 | | 24=3(2+y) | | -3(-2x-4)+x+1=-57 | | 90-9y=180 | | 15(x+1)-3x=2x+4(x-2) | | 2+4y=26 | | 0=2w^2-7w | | 3(4x+3)+3x+4=118 | | -3(2.5)= | | 5(5x-1)+5x-5=-190 | | 1=7x-3x |

Equations solver categories