Given:

To find:
The simplified expression by factoring.
Solution:
Let us factor the numerator:

31x can be written as 3x + 28x.

Take 3x common in 1st two terms and 7 common in next two terms.

Make sure the remaining terms in the both brackets must be same.
Now, take out common factor (4x + 1).

In the same way, factorize the denominator:

8x can be written as 4x + 4x.

Take 4x common in 1st two terms and 1 common in next two terms.

Make sure the remaining terms in the both brackets must be same.
Now, take out common factor (4x + 1).

Substitute the terms we found for numerator and denominator:

Cancel the common factors.

The simplified expression is
.
1/5 (18-11) I believe this is what you mean?
C=180-A-B=180-67-53=60deg.
by sine rule
b/sinB=a/sinA
b=a/sinA*sinB
=13/sin(67)*sin(53)
= 11.28
c/sinC=a/sinA
c=a/sinA*sinC
=13/sin(67)*sin(60)
= 12.23
Answer:36.36%
Step-by-step explanation:
%change=100 X (final-inital value) divided by initial