maddoxgoostree3 maddoxgoostree3
  • 08-12-2020
  • Mathematics
contestada

USE ALL THE WORK IT TAKES TO SOLVE THIS PROBLEM


Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Solve the system of equations algebraically. Show all of your steps.
y=+ 2z
y=3z+ 20

Respuesta :

jjsmith1555 jjsmith1555
  • 08-12-2020

Answer:

x^2 + 2x = 3x+20

-3x  

x^2 - 1x = 20  

- 20

x^2 -1x -20=0

(x-5)(x+4)

x-5 =0 or x+4=0

x = 5 or x= -4

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