z^2-8z-20=

Simple and best practice solution for z^2-8z-20= 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^2-8z-20= equation:


Simplifying
z2 + -8z + -20 = 0

Reorder the terms:
-20 + -8z + z2 = 0

Solving
-20 + -8z + z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(-2 + -1z)(10 + -1z) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(10 + -1z)' equal to zero and attempt to solve: Simplifying 10 + -1z = 0 Solving 10 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1z = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1z = 0 + -10 -1z = 0 + -10 Combine like terms: 0 + -10 = -10 -1z = -10 Divide each side by '-1'. z = 10 Simplifying z = 10

Solution

z = {-2, 10}

See similar equations:

| 3(Q-6)=2(2Q+7)+10 | | 25+-15-12= | | 15x^2+5x-20= | | y=18(0)+0 | | 9y^2+21y+6= | | 2x+3x=30-z | | y=-7(0)+4 | | 3x^2-4y=20 | | 3x^2-4y=20 | | 5(t-3)+7t=4(3t+3)-10 | | 2x^2+5y^2=30 | | -2(5s-6)-12=-2(7s+2)-3 | | 0.25(x-2)=8 | | 5(y+1)+3=3y-20 | | 10+b+10=35 | | 5+t-4=16+9 | | M+4+9=14-9 | | 0.25(t+10)=5 | | 10d+8=5d+33 | | 7xy*7xy^2*7x^2y= | | 2(x-9)=-8.8 | | 2(x-9)=8.8 | | 6(a+7)=63 | | 5x-3+7x=4x+4-6x | | 37.2=4c-2 | | 4e-9=16.6 | | (3+2)(5-1)= | | 2p=1.6 | | x*-7-40=x*4 | | 1263-769= | | 7y-7=23+7y | | 3(a+6)=45 |

Equations solver categories