SOLUTION: Show by counterexample that (x + y)^-2 and x^-2 + y ^-2 are not equivalent.

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Question 94167This question is from textbook algebra and trigonometry
: Show by counterexample that (x + y)^-2 and x^-2 + y ^-2 are not equivalent. This question is from textbook algebra and trigonometry

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Let x=4 y=9
%282%2B3%29%5E-2=5%5E-2=1%2F25
2%5E-2=1%2F43%5E-2=1%2F91%2F4%2B1%2F9=%289%2B4%29%2F36=13%2F36
1%2F25%3C%3E13%2F36
EdJones