Question

Find the x-coordinates of the points of intersection for the following functions below: f(x) = x^2-4x g(x) = -x^2+4x+3

Answer 1

i did this and used the quadratic formula

Answer 2

Set them equal:
x^2-4x=-x^2+4x+3
2x^2-8x+3=0

Answer 3

that should be -3**

Answer 4

i go tthat

Answer 5

I then landed up with 8+- sqrt88 all over 4

Answer 6

Yup :)

Answer 7

well all the answers have sqrt 22 in them :-(

Answer 8

Well, because sqrt(88)=2(sqrt(22))

Answer 9

cause 4 times 22

Answer 10

Yup :D

Answer 11

so 2-1/2sqrt22 and then the plus side

Answer 12

yay!!!