已知3(5x+2)+5
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![已知3(5x+2)+5](/uploads/image/z/2002635-27-5.jpg?t=%E5%B7%B2%E7%9F%A53%285x%2B2%29%2B5)
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已知3(5x+2)+5
已知3(5x+2)+5
已知3(5x+2)+5
15x+6+5<4x-6x-6
17x<﹣17
x<﹣1
∴ x+1<0
1-x>0
∴ √﹙x+1﹚²-1-x=|x+1|-|1-x|
=﹣x-1-1+x
=﹣2.