Question

how do i find y^2-2y=3

Answer 1

You mean how do you find Y?

Answer 2

Because that seems like a perfect equation right there.

Answer 3

I hope you mean, how can I find the values that can be substituted for y to make the onditional statement (equation) true!

It is not a perfect squareequation. To do that, both the y^2 term and the constant term have to be perfect squares. That doesn't mean you can't "Complete the Square" and make it look like that.

Answer 4

add 1 both sides to make a perfect square
y^2 -2.y.1 + 1^2 = 3+1
(y - 1)^2 = 4
(y-1)^2 =2^2
can u solve for y