Step-by-step explanation:
5(x + 7) = 15
x+7=3
x=-4!!!!!!
The product of the factors in the given expression comes to be
.
The given expression is:

We can rewrite the given expression as

<h3>What is the exponent addition rule? </h3>
If we have two numbers with the same base we can write the product of the numbers as a single base followed by the addition of exponents.


....from exponent addition rule
So, 
Therefore, the product of the factors in the given expression comes to be
.
To get more about exponents visit:
brainly.com/question/819893
Answer:
84 degrees
Step-by-step explanation:
Applying the Cosine Rule (Choice 2 is the correct one) :-
12^2 = 11^2 + 6^2 - 2*11*6 cos Y
144 = 121 + 36 - 132 cos Y
cos Y = (121 + 36 - 144) / 132
cos Y = 0.09848
Y = 84.3 degrees