Question

Using identities ,evaluate :- (a)297 X 303 (b) 512

- 492​

Answer 1

Answer:

Step-by-step explanation:

(a)297 X 303

=(300-3)(300+3)

$=300^{2} -3^{2} \\=900-9\\=891$

(b) 512  - 492​

=(500+12)(500-12)

$=500^{2} -12^{2} \\=2500-144\\=2356$