SICP Exercise 1.3 request for comments

Question

I\'m trying to learn scheme via SICP. Exercise 1.3 reads as follow: Define a procedure that takes three numbers as arguments and returns the sum of the squares of the two la

Answer 1

(define (sum-sqr x y)
(+ (square x) (square y)))

(define (sum-squares-2-of-3 x y z)
    (cond ((and (<= x y) (<= x z)) (sum-sqr y z))
             ((and (<= y x) (<= y z)) (sum-sqr x z))
             ((and (<= z x) (<= z y)) (sum-sqr x y))))