raevenmcmurtrie20 raevenmcmurtrie20

25-01-2021
Mathematics

contestada

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

Respuesta :

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

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