check question if correct. (algebra)

Mathematics
Tutor: None Selected Time limit: 1 Day

May 13th, 2015

Hello Larisa again : 

we have : xy^3 - x² and x = -3 and y = -2 

so :  (-3)(-2)^3 - (-3)² = (-3)(-8) - 9 = 24 - 9 = 15 

SO YOU HAVE A GREAT AND A RIGHT ANSWER YOU ARE AMAZING LARISA

May 13th, 2015

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