Question

evaluate 202 square using a minus b whole square

Answer 1

202=(200+2)

(200+2)^2

(200)^2+2×2×200+(2)^2

40000+800+4

40804 is your answer

Answer 2

Hey Readers,

Finding solution using the property (a-b)²

Let a be 205
Let b be 3

Then,
(202)²=(205-3)²
=(205)²+3²-2×205×3
=42025+9-1230
=40804

Thanks!!