Question

Please check my work for this question? "Pick a two-digit number greater than 25. Rewrite your two-digit number as a difference of two numbers. Show how to use the identity (x − y)2= x2− 2xy + y2 to square your number without using a calculator."
My number is 26.
30 - 4 = 26
26^2 = (30 - 4)^2 = 30^2 - 2 x 30 x 4 + 4^2

Answer 1

beautiful

Answer 2

okay thank you! :)