Suppose X and Y represent two different school populations where X Y and X and Y must be greater than 0. Which of the following expressions is the largest? Explain why. Show all work necessary.

X2 + Y2
X2 − Y2
2(X + Y)
(X + Y)2

Question

Suppose X and Y represent two different school populations where X > Y and X and Y must be greater than 0. Which of the following expressions is the largest? Explain why. Show all work necessary.


X2 + Y2
X2 − Y2
2(X + Y)
(X + Y)2

jade27p · Answer

I think d because the values are being added and then multiplied

perl · Answer

If you expand (x+y)^2, what do you get?

jade27p · Answer

a bigger outcome?

perl · Answer

(x+y)^2 = (x+y)(x+y) 
Can you multiply that out?

jade27p · Answer

do i just choose any number to put in place of x and y

perl · Answer

I meant to apply distributive property.

jade27p · Answer

I'm so confused I'm sorry

agent0smith · Answer

You could also check by using number values, eg. x=4 and y=3.