Q no . 4 and 6

Asked by deepsikhab71.8cpsb | 9th Aug, 2021, 11:40: AM

Expert Answer:

4. a.
 
m2 - y2 = (m + y)(m - y)   
 
 
6. a.
 
(993)2 - (7)2 

= (993 + 7)(993 - 7)   ....a2 - b2 = (a + b)(a - b)   
= 1000 × 986
= 986000

Answered by Yasmeen Khan | 9th Aug, 2021, 06:39: PM