Question

(y square -5/2)(y square-7/2)

Answer 1

so your ans is = y^4 - 6y^2 + 35/4

The formula for (a-b)(c-d) is

= ac - ad - bc + ad

Here, a = y^2

b=5/2

c= y^2

d=7/2

i hope you understood...:)