namuncura8
namuncura8
10-01-2015
Mathematics
Answered
log(x+3)(2x+3)+log(x+3)(x+5)=2
Answer :
meylinkalsaleh
meylinkalsaleh
10-01-2015
log(x-3)+log(x) = 2 + log(x+2)
---------------------------
log[(x-3)x] - log(x+2) = 2
-----
log[(x^2-3x)/(x+2)] = 2
----
(x^2-3x)/(x+2) = 2^2
-------
x^2-3x = 4x+8
x^2 - 7x - 8 = 0
Factor:
(x-8)(x+1) = 0
Positive solution:
x = 8
Answer Link
VIEW ALL ANSWERS ( 39+ )
Other Questions
Which reaction is endothermic?A. [tex] HCl + NaOH \rightarrow NaCl + H_2O + 58 \, \text{kJ} [/tex]B. [tex] 6 CO_2 + 12 H_2O + \text{energy} \rightarrow C_6H_{12
Your audience should be a part of your presentation. True or false?
Venous return refers to the flow of blood back to which of the following? a. Lungs b. Brain c. Liver
Which statement best describes the point of view in this passage of John Steinbeck's "The Chrysanthemums"?A. The third-person narrator follows Elisa but doesn't
How did the Hundred Years' War affect standing armies?A. It increased their power.B. It reduced their power.C. It gave their power to nobles.D. It gave them int
a factory has been set up in your area it produce solid,liquid and gaseous waste that must be dumped for the werfate of community members you have been asked to
According to _____, the human propensity to make music evolved as a way of displaying genetic quality to potential mates. a. The mate manipulation hypothesis b.
A popular theory is that presidential candidates have an advantage if they are taller than their main opponents. Listed are heights (in centimeters) of randomly
Which of the following is the equation of a line that passes through the points [tex]$(1,6)[tex]$[/tex] and [tex]$[/tex](2,1)$[/tex]?A. [tex]y = -5x + 1[/tex]B.
When a specific issue and point of view dominate mass media coverage, this is called:_______________________(Note: The original prompt includes extraneous instr
what is 3/8 times 2/9? Answers: A 5/17 B 5/12 C 1/17 D 1/12
How did geography affect life and the economy in the Middle Colonies?
What is 75.36 rounded to the nearest cubic unit
The planet we call Earth has how many main layers
how did the Soviet Union's foreign policy goals contradict one another ?
Together, Bobs shoes weigh about 1 kilograms. Each shoe weighsabout how many grams.
Which pronoun best completes the sentence? How is the pronoun used? __________ and Ginny are looking for a ride to the picnic. A. He; predicate nominative
What are the square roots of 196? A. 13 and –13
What's 2/3 times 5/6 times14
How did geography affect life and the economy in the Middle Colonies?
