Question

Having trouble with this problem.

Answer 1

y^2 = 4x^2 + 7

9(4x^2+7) +16x^2 = 323
36x^2 + 63 + 16x^2 = 323
52x^2 = 260
x^2 = 5
x = √5
just solve for y now.

Answer 2

y^2 = 4(5) + 7
y^2 = 27
y = √27

Answer 3

y = 3√3
forgot to simplify.

Answer 4

thanks that makes sense was solving the whole thing and putting it under a square root before I substituted

Answer 5

lol, i thought that too, but why make it difficult

Answer 6

So it would be +/- both those answers to right?

Answer 7

yes.

Answer 8

wait, you'd have to verify that.

Answer 9

I thought y would be the only one I would have to do +/- for but still keep getting it wrong