Question

Q.6 If the difference between the two squared numbers is given by the identity :-
a 2 - b 2 = (a + b)x(a – b). Using this property how will you find the values of :- i. 152 – 142
ii. 10002 – 9992 3 ​

Answer 1

152+142)×(152-142

=294×110

2940

2. 10002+99923)×(10002-99923

= 109925×89921

=9884565925