Solving Logarithms

Solve for x.
 $\log_52+\log_5x=\log_520$  
x = _______

Tags

CCSS.HSA.REI.A.1

CCSS.HSF.BF.B.5

Solve for x.
 $2\log_410=\log_4\left(8x\right)+\log_4\left(5\right)$  

• x = 2.5

• x = 0.5

• x = 1.538

• x = 11.875

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.4

log₄(3x-1)=log₄(2x+3)

• 4

• 3

• 1

• 8

Tags

CCSS.HSA.CED.A.1

CCSS.HSF.BF.B.5

log₈(4x+4)=2

• 15

• 12

• 10

• 3

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSF.BF.B.5

log₈₁x = 3/4

• 2

• 3

• 27

• 81

Tags

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.4

Solve the equation.

• -2 and 5

• 5 only

• 2 and -5

• 2 only

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.A.2

Solve

 $\log x=1-\log\left(x-3\right)$  

•  $-2$  

• 0

• 3

• 5

Solve

 $2\log_4x+3\log_x4=7$  

• 2

• 4

• 12

• 64

Solve

 $\log_5x+\log_x25=3$  

• 5

• 10

• 25

• 30

Solve

 $7\log_x3-\log_3x=6$  

• 0

• 3

•  $3^{-3}$  

•  $3^{-7}$