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

PLEASE HELP I GIVE THANKS
Madagascar (Lesson 06.01) •Which one of the following different creepy crawlers would you likely not discover when exploring the Madagascan forest? – giant hi
What is the degree of comparison of the underlined modifier? This adventure story is the most entertaining of all these books. A. superlative B. positive C.
A full moon occurs every 30 days if the last full moon occurred on Friday how many days will pass before full moon occurs again on a Friday
who is the person who started a newspaper called the north star
What's the rationale for adopting the US dollar as "legal tender" in Argentina?
The word equation for the reaction between magnesium carbonate and hydrochloric acid is shown below. magnesium carbonate + hydrochloric acid = magnesium chlori
What is 12% of 17.5?
sample#1 contains thymine cytosine and guanine proteins sugars and lysosomes sample#2 contains adenine uracil cytosine and guanine amino acids and carbohydrates
3/8 divided by 1/2 =