Question 615474
Hint: "The difference between two numbers is 2" means that {{{x-y=2}}}. You can solve for x to get {{{x = y+2}}}



The "difference of their squares is 28" means {{{x^2-y^2=28}}}. From here, you can plug in {{{x = y+2}}} to get {{{(y+2)^2-y^2=28}}}