asked 106k views
3 votes
Tích các nghiệm của phương trình Log(x-1)²=2 là

asked
User Gernberg
by
8.1k points

1 Answer

5 votes

Answer:

-99

Explanation:

Log(x-1)²=2

Log(x-1)²=Log(100)

(x-1)²=100

x-1=10 and x-1=-10

x₁=11 and x₂=-9

x₁ × x₂ = 11 × (-9) = -99

answered
User Schrute
by
8.6k points
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