Question

solve the system of equations
x+2y=6
x^2+y^2=8

Answer 1

I got 24 plus or minus radical 1136 all over 10 and I feel like what a I suppose to do with that.

Answer 2

x = 6 - 2y

(6 - 2y)^2 + y^2 = 8

4y^2 -24y + 36 + y ^2 = 8

5y^2 -24y + 36 = 8

5y^2 - 24y + 28 = 0

y = 2
y = 14/5

sub those back in to the linear

Answer 3

I did everything u did but from the last line I went and plugged in the quadratic equation where did u get y=2 and y =14/5?

Answer 4

I still need help, im not understanding this.

Answer 5

solving 5y^2 - 24y + 28 = 0

you get y = 2, 14/5

Answer 6

ya but what do u mean solving that, what did u do to solve it because I tried the quadratic and got this weird number.

Answer 7

solve for the zeroes, what else?

Answer 8

use quad formula, factor, anything you want.

Answer 9

ugh forget it.