3 years ago

I know the answer to it, it's a...however I need an explanation onto why it's a.

Mathematics

1 answer:

KonstantinChe [14]3 years ago

4 0

Answer:

You're right

Step-by-step explanation:

Pythagorean Theorem

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Anna11 [10]

Addd 4 to both sides
$\sqrt{x+9}=5$
sqare both sides
x+9=25
minus 9 both sides
x=16

plug it in for x and see
$\sqrt{16+9}-4=1$
$\sqrt{25}-4=1$
$5-4=1$
1=1
true

not extraneous
an extraneous root would be x=-34

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3 years ago

I know the answer to it, it's a...however I need an explanation onto why it's a.​

I know the answer to it, it's a...however I need an explanation onto why it's a.