Question

answer the follwing using identity 1 (203)squar

Answer 1

(203)^2

= (200 + 3)^2

= (200)^2 + (3)^2 + 2(200)(3)

= 40000 + 9 + 1200

= 41209

Using identity [ (a+b) ^2 = a^2 + b^2 + 2ab]

Answer 2

203 whole square = (200+3) whole squar
here, we can apply (a+b) whole square property which is = a square + b square + 2ab

so, (200+3) whole square = 200 square + 3 square + 2(200)(3)

= 40000 + 9 + 1200
=41209