joseangel12192004 joseangel12192004
  • 09-07-2020
  • Mathematics
contestada

Find the solution to the system of equation select all that apply y=x^2-4 y=2x-5

Respuesta :

LazyBun
LazyBun LazyBun
  • 09-07-2020
Answer: x = 1, y = -3

Explanation: Use the method of substitution we get:

y = x^2-4
y = 2x-5

By substitute:

x^2-4=2x-5

Then we can solve the equation for x

x^2-4-2x+5=0
x^2-2x+1=0

Now solve the quadratic equation by factoring we get:

x^2-2x+1=0
(x-1)(x-1)=0
x-1=0
x = 1

Now that we have found x we can substitute x to the equation:

y = x^2-4
y=1^2-4
y=-3

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

So there you have it :)
Answer Link

Otras preguntas

the bottom of zeyda's jewelry box is a rectangle with length 5 3/8 inches and width 3 1/4 inches. What is the area of tge bottom of the jewelry box?
Why does water quality need to be monitored?? ##I hate science
When a single card is drawn from a shuffled deck of cards, find the odds in favor of getting a 10.?
I need help I can not get it
how do i factor two equation's
What is the sales tax on a $178.90 chair if the tax rate is 5.75%? What is the total cost?
How do export processing zones help overcome barriers to economic development?
An authority will provide what type of information? A. biased and self-praising B. unbiased and informative C. biased and opinionated
Who owns the medical record and what are its purposes? Discuss the important role that health care workers play in documentation, confidentiality, maintenance a
Would 20 inches , 21 inches and 29 inches make a right triangle