309
edits
Changes
Jump to navigation
Jump to search
Line 56:
Line 56: + + + + + + + + + Line 64:
Line 73: − − == Finding square of a negative number == − 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 3*3 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 [-*-=+]then the square also becomes positive.
→Finding square of a negative number
How to find square of a negative numbers?
How to find square of a negative numbers?
'''<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.
=== Evaluation ===
=== Evaluation ===
# 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?