Hello, i need help trying to solve these problems, dont understand how to arrive to answers... thak you very much in advance..
2) y^2= -20x vertex foci
3) Sin^2x-sinx= 0
this is an ellipse and you will need to complete the square to solve it
the Ellipse Equation is
now add in so squares can be construted
factor the squares
divide thru with 36 and simplify