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Mathematics, 18.08.2021 06:50 dunk36

Thực hiện phép nhân, rút gọn rồi tính giá trị của biểu thức
x(x-y)+y(x+y) tại x= -6 và y=8

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Thực hiện phép nhân, rút gọn rồi tính giá trị của biểu thức
x(x-y)+y(x+y) tại x= -6 và y=8...
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