The common denominator is 28
Answer:
<A = 44
Step-by-step explanation:
A triangle is 180 degrees
(x+59) + (x+51) + 84 = 180 >> add everything on the left side
2x + 194 = 180 >> subtract both sides by 194
2x = -14 >> divide both sides by 2 to get x alone
x = -7
since you are finding A<, substitute
<A = x + 51
<A = (-7) + 51
<A = 44
Identity:
So we can rewrite the denominator to get
Multiply numerator and denominator by
. Several terms will cancel since
. Also,
. We get
Factorize the numerator, and write
in terms of
in the denominator to factorize it further to get
The
factors cancel, leaving you with
which you could simplify a bit further by writing
Answer:
I think the answer should be 20
