# Tried this equation everywhere

### Tried this equation everywhere

This costed me 2 pts on a quiz
(2x+7)^(2x+7)=3125
Probably getting the answer to this tomorrow but if someone could solve it would be cool.
Thank you.
Barabbas

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Joined: Sun Dec 02, 2018 12:48 pm
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Guest

### Re: Tried this equation everywhere

If x=-1 ,then

$$(2(-1)+7)^{(2(-1)+7)}$$=

=$$5^{5}$$=(5.5)(5.5)5=

=25.25.5=625.5=

=3 125

So -1 is root.
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