Mathematics
Senior High

(2)を教えて下さい🙇‍♀️

V(x-1)= ニ (2) -1Sx<1のとき Vx+2x+1-/xー2x+1= Vx?+2x+1 -くxー2x+1 =

Answers

x²+2x+1=(x+1)²
x²-2x+1=(x-1)²

つまり、√(x+1)²-√(x-1)²=|x+1|-|x-1|
後は、-1≦x<1のときにx+1,x-1の正負を考えればいい

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