z^2-3z=40

Simple and best practice solution for z^2-3z=40 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^2-3z=40 equation:


Simplifying
z2 + -3z = 40

Reorder the terms:
-3z + z2 = 40

Solving
-3z + z2 = 40

Solving for variable 'z'.

Reorder the terms:
-40 + -3z + z2 = 40 + -40

Combine like terms: 40 + -40 = 0
-40 + -3z + z2 = 0

Factor a trinomial.
(-5 + -1z)(8 + -1z) = 0

Subproblem 1

Set the factor '(-5 + -1z)' equal to zero and attempt to solve: Simplifying -5 + -1z = 0 Solving -5 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1z = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1z = 0 + 5 -1z = 0 + 5 Combine like terms: 0 + 5 = 5 -1z = 5 Divide each side by '-1'. z = -5 Simplifying z = -5

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 = {-5, 8}

See similar equations:

| x+(x-7)=(x+5)-(X+2) | | 5(3n+1)=16+4n | | a/4+12=26 | | c/7+2=1 | | t/7=6 | | 4(4+6x)=39+x | | -5.7(4t+6)-2.3(3t-5)= | | v(2)=1600 | | 6-6b=b-2(1+3b) | | v=1600 | | 6-6b=n-2(1+3b) | | 50-3+2/3=50 | | (2y)(7x^2)(2y^7x^8)= | | 7n-(3n-5)=21 | | 8x+3(x+2)=6+7x | | 15=3(7y-2) | | 3(7x-7)=9 | | 37=-3+5(x+7) | | 5a-15=2+2(2+6a) | | 3(a+4)=7a | | 0.7p+0.3=3.1 | | p(t+1)=-2 | | 3x+2=210 | | 8+16x+19=17x-9-5x | | 3-2(3x-6)=8 | | 4n+38=-6(n-8) | | 3y^2+9y-9=0 | | -6m-4(1-8m)=26-4m | | .67x+4=2x | | 5(4x+7)+7x=-2x+35 | | s/12-3=5 | | -8b+38=-2(7b-7) |

Equations solver categories