式子√(x+4)+1/(√x-1)成立的条件是()A.x>1 B.-4≤x≤1 C.x≥-4
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式子√(x+4)+1/(√x-1)成立的条件是()A.x>1 B.-4≤x≤1 C.x≥-4
式子√(x+4)+1/(√x-1)成立的条件是()A.x>1 B.-4≤x≤1 C.x≥-4
式子√(x+4)+1/(√x-1)成立的条件是()A.x>1 B.-4≤x≤1 C.x≥-4
根号则x+4≥0,x≥-4
x-1≥0,x≥1
分母√(x-1)≠0
x-1≠0
x≠1
所以x>1
选A