Question

how do you solve this problem -4√(x+9)=20?

Answer 1

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finding for medal?

Answer 2

\[-4\sqrt{x+9}=20\]\[(x+9)^{1/2}=20/-4\]\[(x+9)^{1/2}=-5\]\[x+9=\sqrt{-5}\]\[x=\sqrt{-5}-9\]

Answer 3

\[(-4)\sqrt{x+9}=20\]
\[\sqrt{x+9}=20/(-4)\]
\[\sqrt{x+9}=-5\]
\[x+9=(-5)^{2}\]
\[x+9=25\]
\[x=25-9\]
\[x=16\]