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RS Aggarwal Solutions Class 7 Mathematics Solutions for Integers Exercise 1B in Chapter 1 - Integers

Question 25 Integers Exercise 1B

(-5) ×(-5) ×(-5) … 5 times

Answer:

Solution:-

Using the rule for multiplication of integers.

The above question can be written as,

= {(-5) ×(-5) ×(-5) ×(-5) ×(-5)}

= {(-5×-5) ×(-5×-5) ×(-5) … [∵(− × −= +)]

= {(25) ×(25) ×(-5)}

= {(25×25) ×(-5)}

= {625 ×-5} … [∵(− × −= +)]

= -3125

This can also be written as,

= (-5)5

= -3125

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