Answer:
The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined. The range is the set of all valid y values.
Step-by-step:ex:pla:nation
Answer:
Step-by-step explanation:
a
There are many ways to do this. Such ways are using the quadratic formula, completing the square, etc.
We have
We can add 46 to both sides so the -21 becomes a +25. by doing that, we get
This can be wrote as
We solve the square root and get
(The +- is a plus minus sign.) Subtract five on both sides to get
The answer is
C.