Question

Evaluate the following: (a) {( 31 )-2 – ( 21 )-3 } ÷ ( 41 )-2 (b) (3-5 × 10-5 × 125 × a-4) ÷ (5-7 × 6-5 × a-8) (c) [{( 41  )2}-2]-1 × {( 32 )2}3 × ( 31 )-4 × 3-1 × (6-1)-1

Answer 1

Answer:

5  

5

 

5  

−7

×6  

−5

 

3  

−5

×10  

−5

×125

​

 

=  

5  

−7

×(2×3)  

−5

 

3  

−5

×(2×5)  

−5

×5  

3

 

​

 

=  

5  

−7

×2  

−5

×3  

−5

 

3  

−5

×2  

−5

×5  

−5

×5  

3

 

​

 

=3  

−5+5

×2  

−5+5

×5  

−5+3+7

 

=5  

5

 

=3125

Step-by-step explanation: