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Efectuati:   9x⁴y⁴z⁴:(xyz²)²+(-12x²y³z⁴):(-3yz⁴)+(3x²y²z):(3z)

Răspuns :

9x4·y4·z4 :x²y²z4= 9x²y²
-12x²y² z4:(-3yz4)=4x²yz³
3x²y²z:3z=x²y²
9x²y²+4x²yz²+x²y²= x²y(9y +4z² +y)