Question

(1 by 9) power minus 1 by 2 minus 3 multiply by 7 power 0 - (1 by 81) power minus 1 by 4​

Answer 1

Answer:

-3

Step-by-step explanation:

GIVEN

${ \binom{1}{9} }^{ - \frac{1}{2} } - 3 \times {7}^{0} - { \binom{1}{81} }^{ - \frac{1}{4} }$

SOLUTION

${ \binom{1}{9} }^{ - \frac{1}{2} } - 3 \times {7}^{0} - { \binom{1}{81} }^{ - \frac{1}{4} } \\ \\ = ({9})^{ \frac{1}{2} } - 3 \times 1 - ({81})^{ \frac{1}{4} } \\ \\ = {3}^{(2 \times \frac{1}{2}) } - 3 - {3}^{(4 \times \frac{1}{4}) } \\ \\ = 3 - 3 - 3 = - 3$