solving logarithmic equations

log₉(10)-log₉(x-3) =log₉(72)

• 81/16
• 113/36
• No Solution
• 92/15

Tags

CCSS.HSA.CED.A.1

CCSS.HSF.BF.B.5

CCSS.HSA.REI.A.1

CCSS.HSF.LE.A.4

CCSS.HSA.SSE.B.3

log₉(x)+log₉(x+2)=log₉(35)

• 5
• -7
• 5, -7
• -7, -13

Tags

CCSS.HSA.CED.A.1

CCSS.HSF.BF.B.5

CCSS.HSA.REI.A.1

CCSS.HSF.LE.A.4

log₈(9)-log₈(-4x-2) =log₈(36)

• No Solution
• {-113/80}
• {17/4}
• {-9/16}

log₅x - log₅(x+4)=log₅38

• -152/37, -8
• 1/2
• -152/37
• No Solution

Tags

CCSS.HSA.CED.A.1

CCSS.HSF.BF.B.5

CCSS.HSA.REI.B.3

log₆-4x-log₆5=log₆70

• 149
• -16/3 
• -175/2
• -47/5

log(x+6)-log(x) =log(20)

• 1/135
• 27/4
• No solution
• 6/19

Tags

CCSS.HSA.CED.A.1

CCSS.HSF.BF.B.5

CCSS.HSA.REI.A.1

CCSS.HSF.LE.A.4

CCSS.HSA.REI.B.3

log7+log(x²-4)=log35

• 1, -1
• 2, -2
• 3, -3
• 4, -4

Tags

CCSS.HSA.CED.A.1

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.4

CCSS.HSA.REI.B.4

log(2x) - log(5) = log(30)

• 6/5
• 45/2
• 75
• -3/8

Tags

CCSS.HSA.CED.A.1

CCSS.HSF.BF.B.5

CCSS.HSA.REI.A.1

log(4x) - log(4) = log(12)

• 12
• 4
• 10
• 100

log(-2x)-log(5) =log(30)

• -75
• 8/5
• -2/3
• 2