Will (-2)^2 and -2^2 have the same solution? why or why not

1 answer:

5 0

Doing this so I can ask sorry

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Masja [62]

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Hello,

$x=(fof^{-1})(x)=f(f^{-1}(x))=\sqrt{2f^{-1}(x)}+5\\\sqrt{2f^{-1}(x)} =x-5\\2f^{-1}(x)=(x-5)^2\\f^{-1}(x)=\dfrac{(x-5)^2}{2}$

now let's replace x by 7 it comes

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hope this helps

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