Question

which of the following are quadratic equations (i) y(2y+15) =2(y^2+y+8)
(ii) (x+2)(y+2)=(x+3)(x+4)

Answer 1

a quadratic equation has the highest index as 2
i)y(2y+15)
  2y^2+15y
it is a quadratic equation

Answer 2

a quadratic equation contains a degree of 2 ,hence 2nd part is a quadratic equation...