Question

evaluate (1/7)-²×(1/7)^7}³÷(1/7)⁴​

Answer 1

Answer:

Since the power of -7 is even, the answer must have positive sign. So we can just multiply 7 two times to find the value of (-7)².

(-7)² = 7 x 7 ==> 49

Since the power of -3 is odd, the answer will have negative sign.So we can just multiply 3 three times to find the value of (-3)³.

(-3)³ = (-3) x (-3) x (-3) ==> -27

(-7)² x (-3)³ = 49 x (-27) ==> -1323

Hence the answer is -1323