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Worksheets

Log Properties

Total questions: 16

Worksheet time: 34mins

Name
Class
Date
1.
Write logb(xy) as two logs
a)
logbx+logby
b)
logbx-logby
c)
logbx*logby
d)
logbx/logby
2.
Write logb(x/y) as two logs
a)
logbx-logby
b)
logbx+logby
c)
logbx*logby
d)
logbx/logby
3.
Rewrite logb(xn)
a)
nlogbx
b)
(logbx)n
c)
xnlogbx
d)
logb(xn)
4.
Write the expression as a single logarithm.   Then simplify if possible.
log 6 - log 3 + 2 log 7
a)
log 98
b)
log 78
c)
log 56
d)
log 45
5.
Condense
a)
A
b)
B
c)
C
d)
D
6.
Expand
a)
A
b)
B
c)
C
d)
D
7.
Condense
a)
A
b)
B
c)
C
d)
D
8.
a)
log5(x2z2y10)
b)
log5(z2y2x10)
c)
log(zy2x10)
d)
log5(z2 + y2 + x10)
9.
a)
6log8(xyz)
b)
log8(x) - log8(y) - 6log8(z)
c)
log8(x) + log8(y) - log8(z)
d)
log8(x) + log8(y) + 6log8(z)
10.
Condense
a)
A
b)
B
c)
C
d)
D
11.
a)
log(x) + log(z) + 4log(y)
b)
3log(x) − log(z) − 4log(y)
c)
3log(x) + log(z) + 4log(y)
d)
log(x) − 4log(z) − 3log(y)
12.
Expand
a)
6log8v-2log8u
b)
6log8u-2log8v
c)
3log8u-2log8v
d)
6log8u+2log8v
13.

Use the property Logb(xy) = Logb(x) + Logb(y)

to expand: Log3(5x)

a)

log⁡2(5) × log⁡2(x)\log_2\left(5\right)\ \times\ \log_2\left(x\right)

b)

log⁡2(5) + log⁡2(x)\log_2\left(5\right)\ +\ \log_2\left(x\right)

c)

log⁡2(5) − log⁡2(x)\log_2\left(5\right)\ -\ \log_2\left(x\right)

d)

log⁡2(5 + x) \log_2\left(5\ +\ x\right)\

14.

Use the property  log⁡b(xy) = log⁡b(x) − log⁡b(y)\log_b\left(\frac{x}{y}\right)\ =\ \log_b\left(x\right)\ -\ \log_b\left(y\right)  
to expand  log⁡2(x4) \log_2\left(\frac{x}{4}\right)\   

a)

 log⁡2(x) × log⁡2(4)\log_2\left(x\right)\ \times\ \log_2\left(4\right) 

b)

 log⁡2(x) + log⁡2(4)\log_2\left(x\right)\ +\ \log_2\left(4\right) 

c)

 log⁡2(x) − log⁡2(4)\log_2\left(x\right)\ -\ \log_2\left(4\right) 

d)

 log⁡2(5) − log⁡2(x) \log_2\left(5\right)\ -\ \log_2\left(x\right)\  

15.
a)
5log6(a) + 6log6(c) − 30log6(b)
b)
log6(a) + 6log6(c) − 5log6(b)
c)
6log6(a) − 6log6(c) − 30log6(b)
d)
6log6(a) + 6log6(c) − 30log6(b)
16.
a)
6log8(xyz)
b)
log8(x) - log8(y) - 6log8(z)
c)
log8(x) + log8(y) - log8(z)
d)
log8(x) + log8(y) + 6log8(z)