12345anaa 12345anaa
  • 21-07-2016
  • Mathematics
contestada

What are the solutions to the equations?
X^2 + y^2 =5
y=2x

Respuesta :

nhianhdo
nhianhdo nhianhdo
  • 21-07-2016
x^2+(2x)^2=5
x^2+4x^2-5=0
5x^2-5=0
5(x^2-1)=0
x^2-1=0
(x+ square root of 1)*(x- square root of 1)=0
x= square root of 1 or x= - square root of 1
then plug into y=2x
y= 2 times square root of 1 or y= -2 times square root of 1
Answer Link

Otras preguntas

select the correct answer what argument is franklin d roosevelt making in this exerpt from his four freedoms speech
which muscle is not capable of elevating the scapula
you have 5 friends who want to go to a concert with you but you only have 3 extra tickets. how many possible ways are there to choose 3 of you 5 friends
Find the median of following data round to the nearest hundredth. 12.5, 13.24, 7.89,22.45
Which best describes the conclusion of the Declaration of Independence?
What does 0.5 and 300 represent?
In the circle, mBC=86. The diagram is not drawn to scale
rhyolite is an example of
Match the terms and definitions below. 1)claim A)expressing the opposite of what is actually meant 2)irony
Which of the following would be a college course that a marine biologist would take?