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MissPacGirl
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The sum of two numbers is 3. The difference of the squares of the numbers is 33. What is the absolute value of the difference of the two numbers?
 2 years ago
 2 years ago
MissPacGirl Group Title
The sum of two numbers is 3. The difference of the squares of the numbers is 33. What is the absolute value of the difference of the two numbers?
 2 years ago
 2 years ago

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MissPacGirl Group TitleBest ResponseYou've already chosen the best response.0
x+y=3 (x+y)(x=y)=33 xy=a
 2 years ago

MissPacGirl Group TitleBest ResponseYou've already chosen the best response.0
oops, I meant (xy) not (x=y)
 2 years ago

MissPacGirl Group TitleBest ResponseYou've already chosen the best response.0
it is actually 11.
 2 years ago

adnanchowdhury Group TitleBest ResponseYou've already chosen the best response.0
\[a  b = 3\] \[a ^{2}  b ^{2} = 33\] Rearrange eqaution 1: b = 3a Substitute into equation 2: \[a ^{2}  (3a) ^{2} = 33\] Solve for a...
 2 years ago

MissPacGirl Group TitleBest ResponseYou've already chosen the best response.0
I substituted so ir is 3(xy)=33 divided 3 from both sides. xy=33/3 xy=11 absolute value of 11 is 11.
 2 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.2
\[x+y=3\] \[x^2y^2=33\] \[(x+y)(xy)=33\] \[xy=\frac{33}{x+y}\] \[xy=\frac{33}{3}=11\]
 2 years ago

MissPacGirl Group TitleBest ResponseYou've already chosen the best response.0
I did it a bit different, but that's okay! :D
 2 years ago

adnanchowdhury Group TitleBest ResponseYou've already chosen the best response.0
Yes, you way is better.
 2 years ago

nenadmatematika Group TitleBest ResponseYou've already chosen the best response.0
just a second 7+(4)=3 and 7^24^2=33 so the numbers are 7 and 4...oh no I'm sorry it's the absolute value of the DIFFERENCE...:D sorry :D you're right :D
 2 years ago
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