Can you explain your question?
Answer:
x=8
Step-by-step explanation:
Those angles are supplementary so:
140+5x=180
5x=40
x=8
First, note that
Then use the formula for the sum of perfect cubes:

Therefore,

The quadratic trinomial
couldn't be factored anymore, so the expression
has two factors
and
Answer: correct choice is A.
Answer:

Step-by-step explanation:
since g(x) is equal to
, you just plug in the value of 2 for x, to get
, and 2 to the power of 2 (also known as 2 squared) is equal to 4, which makes your equation
, which equals 5.