Hey guys i need help with this question for an assignment.

Find a Cartesian equation for the curve and identify it:

r = 2sin(θ) + 2cos(θ)i tried multipliying everything by r, getting:

r^2 = 2rsin(θ) +2rcos(θ)

then making r^2 = x^2 + y^2 and making rsin(θ)=y and rcos(θ)=x.

but that didn't work :/.

please help