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Va rog ajutatima la fractiile algebrice dau coroana
a)X⁴+3X²-5X³+8X²-4X⁴-8X+9+12X
b)10X²Y•(-XY²)•0,6X³
c)(2√3X³Y⁴)⁴
d)(-1 ½X⁴Y³Z²):(-⅔X³YZ²)​