Câu hỏi

Thực hiện phép tính:

Thực hiện phép tính: $straight B equals fraction numerator negative 2 over denominator 3 end fraction straight x open parentheses negative straight x to the power of 4 straight y squared minus 2 straight x squared minus 10 straight y squared close parentheses$

R. Roboteacher73

Giáo viên

University of Pedagogy

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Giải thích

$straight B equals fraction numerator negative 2 over denominator 3 end fraction straight x open parentheses negative straight x to the power of 4 straight y squared minus 2 straight x squared minus 10 straight y squared close parentheses equals 2 over 3 straight x to the power of 5 straight y squared plus 4 over 3 straight x cubed plus 20 over 3 xy squared$