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OpenStudy (anonymous):
-4√x+9 = 20 Please show all work.
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Directrix (directrix):
Is the radicand (under the square root symbol) quantity (x + 9) or just x with a "free" 9 not under the radical?
OpenStudy (anonymous):
Directrix (directrix):
|dw:1334692267462:dw|
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