Question

please find this quickly​

Answer 1

Answer:

Refers to the attachment....

Step-by-step explanation:

In the last step, it is zero bcoz the bases are same so the powers are equal.... Due to the multiplication sign, we hzve added up the powers....

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Answer 2

Answer:

1

Step-by-step explanation:

${\frac{81}{16}}^\frac{-3}{4} * {\frac{25}{9}}^\frac{-3}{2} * {\frac{2}{5}}^{-3}$  =     ${\frac{16}{81}}^\frac{3}{4} * {\frac{9}{25}}^\frac{3}{2} * {\frac{5}{2}}^{3}$

                             =     ${\frac{2}{3}}^{3} * {\frac{3}{5}}^{3} * {\frac{5}{2}}^{3}$

                             =     $\frac{8}{27} * \frac{27}{125} * \frac{125}{8}$

                             =     1