**Exercise 1.3:** Define a procedure that takes three numbers as arguments and returns the sum of the
squares of the two larger numbers.

```
(define (square x) (* x x))
(define (sum-of-squares x y) (+ (square x) (square y)))
(define (max a b) (if (> a b) a b))
(define (take-two a b c)
(cond ((and (> a b) (> a c))
(sum-of-squares a (max b c)))
((and (> b a) (> b c))
(sum-of-squares b (max a c)))
(else (sum-of-squares c (max a b)))))
```

Just for fun another way:

```
(define (square x) (* x x))
(define (sum-of-squares a b c) (+ (square a) (square b) (square c)))
(define (least a b) (if (< a b) a b))
(define (take-two a b c)
(- (sum-of-squares a b c)
(square (least (least a b) c))))
```