raevenmcmurtrie20 raevenmcmurtrie20
  • 25-01-2021
  • Mathematics
contestada

slove system of equations y=2x-3 y=x^2-2x-8

Respuesta :

thebecks
thebecks thebecks
  • 25-01-2021

Answer:

2 solutions:

x=5 and y=7

x=-1 and y=-5

Step-by-step explanation:

y=2x-3

y=x^2-2x-8

y=y   so:

2x-3=x^2-2x-8

simplifying to:

x^2-4x-5=0

factoring to:

(x-5)(x+1)=0

x=5 or x=-1

if x=5 then y=2(5)-3=7

if x=-1 then y=2(-1)-3=-5

Answer Link

Otras preguntas

A founding population of lizards arrives on an island. Which type of isolation would most likely result in this population becoming a new species? temporal geog
patrick brought 54 inces of material that cost $3.40 for one yard. What change did he gets if he paid for the material with twenty-dollar bill? please explain a
A woman insists that she will never marry a man as short as or shorter than she, knowing that only one man in 400 falls into this category. Assuming a mean heig
In 1959, Mary Leakey discovered the bones of Zinj, a ___ ancestor of modern humans. A. premier B. preposterous C. pretentious D. primeval
Why might two places at the same distance from the equator have different climates
(5x3 + 3x2 − 17x + 8) ÷ (x + 2)
An 8-ounce package of cheese costs $4.29. which is closest to the cost per pound?
Which sentence uses commas correctly? A. On a hike you may get thirsty, but, don't drink from the stream. B. Some streams contain germs and these can make you s
Cream of tartar has a pH that is (acidic or basic)
Which defines oligarchy? A. rule by the citizens B. rule by a monarch C. rule by a congress D. rule by a small group