evaluate (i) [-5/7]-² (ii) [(-1/2)⁵]‐²
please answer and give explanation
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evaluate (i) [-5/7]-² (ii) [(-1/2)⁵]‐²
please answer and give explanation
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Answer:
bro we can make the exponents positive by taking denominator to numerator vice versa to it also
-7/5×-7/5
by multiplication two minus becomes plus
then,
49/25
2. [(-1/2)⁵]-²
bro formula is (a^m)^n=a^m×n
(-1/2)⁵×-²
-1/2-¹⁰
again same we should make exponent positive
(-2)¹⁰
-2×-2×-2×-2×-2×-2×-2×-2×-2×-2
768