What would you like to ask?help me figure out this ^-2 equation. i always get stuck on this?

a^-2 + b^-2 / a^2 + b^2

help me i jut dont understand this,, working out if possible

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  • 9 years ago
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    Please put brackets around what you mean.

    I think your question is (a^-2 + b^-2) / (a^2 + b^2) Am I right? If not put something under additional information.

    (1/a^2 + 1/b^2) / (a^2 + b^2)

    Now consider 1/a^2 + 1/b^2 by itself.

    (a^2 + b^2) / a^2 * b^2 is what you get when you add these two together.

    (a^2 + b^2)/[(a^2*b^2)*(a^2 + b^2) ] I'll write this in a slightly more understandable way.

    (a^2 + b^2)

    ========

    (a^2*b^2)*(a^2 + b^2) The a^2 + b^2 cancel out

    1/(a^2*b^2)

  • assuming it is

    (a^(-²) +b^-²) /( a²+b²) =

    (1/a+1/b) /( a²+b²) =

    (b+a)/ ab /( a²+b²) =

    (b+a) /ab( a²+b²)

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