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Mathematics, 02.10.2019 09:00 jada4020

Why does the problem equal 1/y^2+9?
after multiplying the second fraction by -1 to make the denominators equal, then adding, and then simplified the y^2 on the top and the y^4 on the bottom you get 1/y^2-81. how does the 81 turn into a 9? and once it is a nine, why don't you simplify it to (y-3)(y+3)?


Why does the problem equal 1/y^2+9?  after multiplying the second fraction by -1 to make the

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Why does the problem equal 1/y^2+9?
after multiplying the second fraction by -1 to make the...
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