Question

Find the square of the following numbers without actual multiplication a) 509 b) 211 pls step by step fast ​

Answer 1

Answer:

plz mark me as brainliest

Step-by-step explanation:

1. 2,59,081

2.44,521

Answer 2

Answer:

(a) 259081 (b) 44521

Step-by-step explanation:

(500 + 9)^2

= 500^2 + (2x500x9) + 9^2 [(a+b)^2 = a^2 + 2ab + b^2]

= 250000 + 9000 + 81

= 259081

(200 + 11)^2

= 200^2 + (2x200x11) + 11^2 [(a+b)^2 = a^2 + 2ab + b^2]

= 40000 + 4400 + 121

= 44521