Advertisements
Advertisements
Question
Using distributive law, find the square of 72
Advertisements
Solution
Given: 72
As we know,
(72)2 is to find using distributive law:
722 = (70 + 2)2
= (70 + 2)(70 + 2)
= 70(70 + 2) + 2(70 + 2)
= ((70 × 70) + (70 × 2)) + ((2 × 70) + (2 × 2))
= 4900 + 140 + 140 + 4
= 5184
APPEARS IN
RELATED QUESTIONS
The square of which of the following number would be an odd number?
5559
Find the least number which must be added to the following numbers to make them a perfect square:
5607
Find the greatest number of 4 digits which is a perfect square.
Find the greatest number of three digits which is a perfect square.
Find the square root of:
\[10\frac{151}{225}\]
Find the value of:
\[\frac{\sqrt{441}}{\sqrt{625}}\]
Evaluate: 372 – 362
A number ending in 9 will have the units place of its square as ______.
There are 200 natural numbers between 1002 and 1012.
A number having 7 at its ones place will have 3 at the units place of its square.
