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Q.

The value of (-3)-4  is


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a

12

b

81

c

-112

d

181  

answer is D.

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Detailed Solution

Given that, (-3)-4.
We have to find the value of (-3)-4  .
We are aware of this, based on the exponents' law.
a-m=(1am)
We can write given equation as (-3)-4=(1-34)
⇒(-3)-4= (1-3)-4
But we also know that 34=81.
Substituting in above we get (-3)-4=181.[ ∴Since the negative sign is multiplied by an even number, it turns positive.]
Thus, the value of (-3)-4  is 181.
Hence, option 4 is correct.
 
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