Khảo sát sự biến thiên và vẽ đồ thị hàm số y= -x^4 + 2x^2-2

Jorge planted flowers in his garden he planted one row of 12 tulips and one row of 36 daisies george's friend kylie has a garden with 75 flowers in it kylie's garden only contains tulips and daisies. is it possible for kylie‘s garden she have the same ratio of tulips to daisies as george's garden?

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

Determine if the equation defines y as a function of x: 2xy = 1. yes o no