Question

solve this two questions with ans also only last question than I mark as brilliant​

Answer 1

Answer:

Hope it helps uh!!

Step-by-step explanation:

Answer 2

Answer:

(5/9)^-3. and a=3

Step-by-step explanation:

{(5/9)^-7} ★{(9/5)^-4}

={(5/9)^-7}/{(5/9)^-4}

=(5/9)^(-7+4)

=(5/9)^-3

second ans

{(-5)^(a+2)}★(-5)^4 =(-5)^9

or(-5)^(a+6)=(-5)^9

or a+6 =9

or,a =3