1. two numbers differ by 17. find the numbers that produce a minimum product.

(i tried it out and my answer is -8.5 and 8.5, however i dont think that is right)

2. the sum of base & height of a triangle is 21cm. determine the max area of the triangle in sq centimetres.

(i managed to get A = 21x - x^2/2, but i dont know how to approach it from there)

thanks :]