Question

plzzzzzz....... solve this.... plzz...do it....plz..
I will thank your 10 answers....plz....!!!!!​

Answer 1

Answer:

a)21x^2

b)-4/x^5

c)cospi/4=1/√2

d)(sinx/2+cosx/2).(cosx/2-sinx/2)

Explanation:

all answers