1) 9x² + 2x - 5xy³ + 3y
Степень равна 4 .
[tex]\displaystyle\bf\\2)\\\\-2x\cdot 3y^{3} \cdot(-3x\cdot y^{4} )^{2} =-6xy^{3} \cdot 9x^{2} y^{8} =-54\cdot x^{1+2} \cdot y^{3+8} =\\\\=-54x^{3} y^{11}[/tex]
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1) 9x² + 2x - 5xy³ + 3y
Степень равна 4 .
[tex]\displaystyle\bf\\2)\\\\-2x\cdot 3y^{3} \cdot(-3x\cdot y^{4} )^{2} =-6xy^{3} \cdot 9x^{2} y^{8} =-54\cdot x^{1+2} \cdot y^{3+8} =\\\\=-54x^{3} y^{11}[/tex]