Question

Q5. Write down each of the following in exponential form
(a) 5xy X 3x²y X 7y sa​

Answer 1

Answer:

We know that if a number say b is multiplied three times. That is, b×b×b can be written as b  

3

.

=> b  

3

 = b×b×b

Similarly,

5xy=5×x×y.

3x  

2

y=3×x×x×y.

7y  

2

=7×y×y.

Thus,  

5xy×3x  

2

y×7y  

2

=5×x×y×3×x×x×y×7×y×y

                                =5×3×7×x×y×x×x×y×y×y.

                                =105×x  

3

×y  

4

.

                                =105x  

3

y  

4

.

Explanation:

Answer 2

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