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Integers | Integers Exercise 1B

Question 25

(-5) ×(-5) ×(-5) … 5 times

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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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Our top 5% students will be awarded a special scholarship to Lido.

subject-cta

Question 25

(-5) ×(-5) ×(-5) … 5 times

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

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

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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