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 is a true statement?A. The citizens of a state may only register to vote after proving to have submitted their census survey.B. The censu
How did life on earth influence the development of earths atmosphere?
There are (26)3 ⋅ 20 bacteria in a sample. What is the total number of bacteria in the sample?
Dequan heard that as a general rule, he should spend no more than one week's pay on rent. If Dequan's pay is $49,200 per year, what is the maximum amount per mo
The acceleration of gravity on earth is approximately 10 m/s2 (more precisely, 9.8 m/s2. if you drop a rock from a tall building, about how fast will it be fall
which is the domain of the function f(x)=5/6[3/5]x?
How did the united states’ decision to join the allies affect world war i?
What is a distinguishing characteristics describing most parasitic diseases?
What is de numerator in a 11/12 fraction
What happens to shadows at sunrise and sunset??