《Bae Issa》的歌詞如下：
Bae Issa (Prod. Rico讓 )
(女聲獨白) : You should stay where you are , at my side
Bae, issa , yo and your feelings I'm a let em know
Yo I ain't even got a type , I ain't tryna hurt your pride
But I ain't tryna be alone tonight
(Verse 1) :
Girl you know you got it , you got it , got it , got it
I ain't tryna play it cool , I ain't tryna act so cold
But I ain't tryna be alone tonight
(Chorus) :
Bae Issa , bae Issa , baby you know what it is
I ain't tryna play it cool , I need you to come and hold me tight
Bae Issa , bae Issa , baby you know what it is
Baby I just want you to hold me tight
(Verse 2) :
Yeah I'm on my own but it feels like we apart
Can't stop thinking about you so let's make up now that we apart
You should stay where you are , at my side
(Chorus) :
Bae Issa , bae Issa , baby you know what it is
I ain't tryna play it cool , I need you to come and hold me tight
Bae Issa , bae Issa , baby you know what it is
Yeah已知方程組：x^2 - y^2 = 3①,x + y = 3②,求x^2 + y^2的值.解由①得(x+y)(x-y)=3③,把②代入③得x^2-y^2=1④,由①得x^2-y^2=3⑤,⑤-④得x^2+y^2=4⑥,∴x^2+y^2=4。為什麼？怎么得到的？答案上寫由①得(x+y)(x-y)=3②怎么從②推不出這個？是不是題目錯了？急求！！！請大神們賜教！！！線上等！！！萬分感謝！！！（為什麼-④就得到⑥）這個我不太明白，請大神們詳細解答一下，謝謝！！！急求！！！線上等！！！萬分感謝！！！（求大神們詳細解答）！！！
首先，這個方程組並沒有錯誤。解法是這樣的：\n由①式，移項得：(x+y)(x-y)=3\n再由②式，把x+y=3代入上式，得：x^2-y^2=1\n再由①式，得：x^2-y^2=3\n最後，把②式代入③式，得：x^2+y^2=4\n這樣，我們就得到了x^2+y^2的值。\n至於“怎么從②推不出這個”，這是因為②式是已知條件，我們不能從這個已知條件中得到其他信息。但是，我們可以通過②式和方程組的其它形式來求解未知量。\n至於“為什麼-④就得到⑥”，這是因為我們在求出x^2+y^2的值後，把它和已知的3相減，就可以得到另一個未知量的值。這個方法叫做“移項”。\n希望這個解釋對你有所幫助！如果你還有其他問題，歡迎繼續提問。