Question: Some Squared vs All Squared

Comment on Some Squared vs All Squared

I also would like to add another way of solving this problem.
Quantity A: (x-y)(x+y) Quantity B:(x-y)(x-y)
We can cancel one (x-y) from both sides.
Quantity A:(x+y) Quantity B:(x-y)
Quantity A therefore: 999.9 Quantity B: 1000
So, Quantity B is greater.

P.S. Your lessons are great :)
greenlight-admin's picture

That's a great approach!
It saves us a step.

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