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Mathematics 21 Online
OpenStudy (anonymous):

PLEASE HELP MULTIPLE CHOICE. (Picture)

OpenStudy (anonymous):

OpenStudy (anonymous):

@ChristopherToni

OpenStudy (anonymous):

The equation can be rewritten as: \[\sqrt{(x-5)^{2}}+12\sqrt{x}=15\sqrt{x}\] Take the squareroot of the first part and then subtact the right hand portion form both sides to get a zero on right, then try your solutions

OpenStudy (tkhunny):

Start with \(x \ge 0\). You should ponder why this is so. Simplify quite a bit \(\sqrt{(x-5)^{2}} = 3\sqrt{x}\) Squaring, since everything is positive \((x-5)^{2} = 9x\) Now, you have a plain, old Quadratic Equation. Remember that \(x \ge 0\)

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