Answer:
Step-by-step explanation:
You know that the given function is:
You know that you must evaluate this function for .
Then, to evaluate the function for , you need to substitute this value into the given function and simplify it.
Therefore, you get:
So, the answer is:
Answer:
option (b) is correct.
First step to solve for deriving the quadratic formula from the quadratic equation is completing the square.
Step-by-step explanation:
Given : the quadratic equation
We have to find the first step for deriving the quadratic formula from the quadratic equation.
Quadratic formula is given by
Consider the given quadratic equation
Divide the equation by a, we get,
Take to other side, we get,
Add to both side, we get,
Thus, the left side is in the form of
On solving, we get,
Then solve for x , we get quadratic formula
Thus, first step to solve for deriving the quadratic formula from the quadratic equation is completing the square.
Thus, option (b) is correct.