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nguyenchamanh256
2 năm trước
tính : 1 )13 -18 -(-42) - 15 2 ) 369-4[(-5)+4.(-8) 3 ) (-8)^3 : (-8)^2 +8 4 ) (-12).(-13)+13.(-29) 5 ) 17-11-14-(-39) 6 ) 125 - 4 [ 3-7.(-2) 7 ) (-2)^7 : (-2)^4 + 8 8 ) (-14) .9 - 13.(-9) 9 ) -2-13+(-14)-19 10 ) 221 + 4[(-5).8-4] II Tìm x thuộc 1 ) (x - 5 )(x+6)=0 2 ) (x+2)(x-9)=0
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