Question

What is 23 expressed as a difference of two perfect squares?

Answer 1

\[\huge {23= 12^2-11^2}\]

Answer 2

11 isn't a perfect square. it has to be the sum of two PERFECT squares.

Answer 3

oh
23=144-121

Answer 4

144 is square of 12
121 is square of 11

Answer 5

and they are perfect squares?

Answer 6

the question is: "Every odd prime can be expressed as the difference of two perfect squares in one and only one way. Find the way for 23."

Answer 7

A perfect square no. is the result of product of a number by itself .
4 is a perfect square cause 2*2=4
similarly
121= 11*11
144=12*12

Answer 8

awesome thanks so much !

Answer 9

Welcome:D