Question

PLEASE HELP WILL GIVE MEDAL

y^2 + x ^2 = 40000
y = 5x + 2
I need to solve using substitution

Answer 1

Just plug in the value of y as 5x + 2
Then operate as asked

Answer 2

Do you understand

Answer 3

i did then i got lost

Answer 4

@chrisvillasmil: Please show what you have done so far, up to the point where you "got lost." What kind of help do you need to progress beyond that point?

Answer 5

i didnt know what to do after i got to
26x^2 + 20x + 4 = 40000

Answer 6

First, please square both sides of y as 5x + 2 and show your result, below.

Answer 7

just use the quadratic formula and plug in the values

Answer 8

(25x^2 + 20x + 4) + x^2 = 40000

Answer 9

Much better!
Plesae now remove the parentheses and combine like terms. Move that 40000 from the right side to the left side of your equation.

Answer 10

Do you know the quadratic formula??

Answer 11

40000 = 26x^2 + 20x + 4

Answer 12

yes i do @Rohith15

Answer 13

Then whats the problem
Just plug in the values

Answer 14

oh thats right i completley forgot i could do that. thanks @Rohith15

Answer 15

This problem requires SOLVING the given system of equations, NOT "plugging in the values."

What are the solutions?

Please be sure to check your solutions.