Biết rằng giữa các tập hợp A, B, C có các hàm thức: A ∪ B ⊂ C, A ∪ C ⊂ B, B ∪ C ⊂ A
Từ đó có thể suy ra A = B = C được không?

-14

step-by-step explanation:

2x2 – 2(x+4)

=2x2-2（5+4）

=4-2×9

=4-18

=-14

is there answer choices?

answer by yourhope:

hi! : )

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: )

its a trick question

step-by-step explanation:

dogs love water, just turn on the hose and it will run in circles chasing the water all day : )