Wadi25 Wadi25
  • 02-03-2021
  • Mathematics
contestada

Solve the simultaneous equations 3x²+ 2x = y²- y + 50, 2x = y +5.​

Respuesta :

really226
really226 really226
  • 02-03-2021

Answer:

(x,y) = (4,3), (20,35)

Step-by-step explanation:

3x²+ 2x = y²- y + 50

2x = y +5

y=2x-5, sub into 3x²+ 2x = y²- y + 50

[tex]3x^2+2x=(2x-5)^2-(2x-5)+50\\3x^2+2x=4x^2-20x+25-2x+5+50\\0=x^2-24x+80\\x=20 ,4\\[/tex]

sub into y=2x-5

y= 35, 3

Answer Link

Otras preguntas

Which of the following best describes a neutralization reaction?
A substance has a melting point of 80 °C. Which of the following is true for the substance? (5 points) a) It will also change from a liquid to a gas at 80 °C w
How many hours do you have to falsify claim as a pica or cuss worker for it to be a crime
Solve for X picture below
how to make khir of step anwer ​
On January 1, 2021, Princess Corporation leased equipment to King Company. The lease term is 12 years. The first payment of $716,000 was made on January 1, 2021
A phone company offers a monthly cellular phone plan for $25. The plan includes 250 anytime minutes, and charges $0.20 per minute above 250 min. Write a piecewi
Which membranous structures conduct impulses through the sarcoplasm to stimulate the release of calcium?.
.A bacteria culture grows at a rate of 20% per minute. If the culture initially has 3,200 bacteria specimens, how many specimens would be in the culture after 5
Why shouldn’t applicants to job openings send their cover letter as an attachment in an e-mail? when would it be acceptable to send a cover letter as an attachm