Đáp án:
Y= -6 X= 8 nha bạn
Giải thích các bước giải:
-4 = 3 =-1
x y 2
+) -4 =-1
x 2
⇒ (-4).2=x.(-1)
hay: x.(-1)=(-4).2
x = (-4).2
-1
⇒ x = 8
+) 3 =-1
y 2
⇒ 3.2=y.(-1)
hay: y.(-1)=3.2
y = 3.2
y =-6
Vậy x=8 và y=-6.
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giúp em bài 9 ạ em xin cảm ơn nhiều
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giải giùm mình nha mỗi câu 5 điểm
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tai sao khi rot nuoc ra khoi phich nuoc roi day nuoc lai ngay thi se bi bat nap lam the nao de tranh hien tuong nay
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