5x^(2/3)+22x^(1/3)-15=0

The fractions as exponents are confusing me. Please help! Show work if possible so I can understand? Thank you!
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1 Answer

Let y=x⅓ then: 5y2+22y-15=0=(5y-3)(y+5).

So y=⅗ or -5, making x⅓=⅗ or -5. Therefore x=⅗3=27/125 or -53=-125.

SOLUTION: x=27/125 or -125.

by Top Rated User (1.2m points)

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