Question

PROVE THAT9^3-2-3*2^0-(1/81)*1/2=15

Answer 1

Step-by-step explanation:

$9 ^{ \frac{1}{2}\times 3 }-3\times 1-81 ^{ \frac{1}{2} }  ;</p><p></p><p>=(9 ^{ \frac{1}{2} }) ^{3}-3 - \sqrt{81} ; \\ </p><p></p><p>=(\sqrt{9}) ^{3} -3-9;</p><p></p><p>=(3) ^{3}-3 -9;</p><p></p><p>=27-3-9;</p><p></p><p>=15</p><p></p><p>$