Changes
From Karnataka Open Educational Resources
29 bytes added
, 11:35, 21 June 2022
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| How to find square of a negative numbers? | | How to find square of a negative numbers? |
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| + | '''<big><u>Finding square of a negative number</u></big>''' |
| + | * As we have already learnt how to find a square of a natural number,suppose if there is any integer -2. |
| + | * How do we find its square? |
| + | * Do we have the square of negative integers also? |
| + | * To answer all these questions let us recall the squaring of a natural number |
| + | * consider 3^2,we can write 3^2 as 3x3 which is 9 |
| + | * similarly let us take any negative integer such as (-4)^2, |
| + | * We can write this as (-4)*(-4), when we use the rules of multiplication of two negative integers the product becomes positive such that [- x - =+]then the square also becomes positive. |
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| === Evaluation === | | === Evaluation === |
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| # Name the perfect square between 20 and 30? | | # Name the perfect square between 20 and 30? |
| # What is the square of 0? | | # What is the square of 0? |
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− | == Finding square of a negative number ==
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− | As we have already learnt how to find a square of a natural number,suppose if there is any integer -2.
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− | How do we find its square?
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− | Do we have the square of negative integers also?
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− | To answer all these questions let us recall the squaring of a natural number
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− | consider 3^2,we can write 3^2 as 3*3 which is 9
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− | similarly let us take any negative integer such as (-4)^2,
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− | We can write this as (-4)*(-4), when we use the rules of multiplication of two negative integers the product becomes positive such that [-*-=+]then the square also becomes positive.
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