Question

The sum of two numbers is 17, their product is 60. find the numbers.

Answer 1

let the no.s x and y .so x+y=17,and therefore we get x=17-y,also we have x×y=60.put value of x from the previous equation. y×{17-y}=60,so 17y-y^2=60,or y^2-17y=60,y={17+uderroot 17^2-4×1×(-60)}/2,and negative also find value of x by putting in 1st equation