\(\left\{{}\begin{matrix}\widehat{CBA}< 135\Rightarrow\widehat{ABD}>45\Rightarrow\widehat{BAD}< 45\Rightarrow BD< DA\\\widehat{ACD}< 45\Rightarrow\widehat{CAD}>45\Rightarrow AD< CD\\\end{matrix}\right.\)
Tìm 2 số hữu tỉ x, y ( y khác 0 ) sao cho : x+y = x.y = x:y
Help me , help me , help........m......e
a, x+3 /8= 2/x-3 help help me
Help me đang cần gấp lắm ạ
help me !!! Chiều 3h10 mk cần rồi
1, (X+1/2)^2=4/25
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A, 3x+2/5x+7 = 3x-1/5x-3 Help me. :))
help me
| 2 x - 1 | = |-3|
X=???????????
help me giai bt tu 6 -10 trg sach gk
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