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2 votes
What is the solution to the equation ? sqrt 2n+28-4 sqrt n=0?

n=2
n=4
n=7
n=14

PLEASE HELP ASAP

2 Answers

4 votes

Just took the test it. Is n=2

User Akidi
by
8.8k points
4 votes
Hello !


√(2n+28)-4√(n)=0\\\\√(2n+28)=4√(n)\\\\√(2n+28)^2=\left(4√(n)\right)^2\\\\2n+28=16n\\\\2n-16n=-28\\\\14n=28\\\\\boxed{\boxed{n=2}}
User Silly Sally
by
7.5k points

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