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notbadus1
@notbadus1
August 2022
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3lgx^2-lg^2 x = 9
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ludmilagena
Verified answer
3*lgx² -lg²x =9 (x>0)
6* lgx - lg²x -9=0 y=lgx
6y-y²-9=0
y²-6y+9=0
D=36-36=0
y=6/2=3
lgx=3
x=1000
4 votes
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Verified answer
3*lgx² -lg²x =9 (x>0)6* lgx - lg²x -9=0 y=lgx
6y-y²-9=0
y²-6y+9=0
D=36-36=0
y=6/2=3
lgx=3
x=1000