Question 747236
xy=196

x+y =53 (or y=53-x)


x(53-x)=196

53x-x^2=196

x^2-53x+196=0

-49 and -4 work...



x^2-49x-4x+196=

x(x-49)+4(x-49)=0


(x+4)(x-49)=0


so we use x=49

and then we see y=4


:)