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Stefanyadrugau
a fost răspuns

b) (3x^3) ^3 : (-x)^2
c)(x+3y)(2x-5y)

Răspuns :

Ralucaraican
(3x³)³:(-x)²=27x⁹:(-x)²=-27x⁷

(x+3y)(2x-5y)=2x²-5xy+6xy-15y²=2x²-15y²+xy
Maryanabel3579
b.)(3x^3)^3:(-x)^2=(27x^9):x^2=27x^7 si c.)(x+3y)(2x-5y)=2x^2-5xy+6xy-15y^2=2x^2+xy-15y^2

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