Derive the equation of the parabola with a focus at (−5, −5) and a directrix of y = 7.
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
1) Distribute the exponent outside of the parentheses to the terms inside the parentheses. In this case, multiply the 3 outside the parentheses with the exponent of each of the terms inside:
·
·
2) The variables are fine - you can't simplify them further. All you need to do now is multiply the out. Remember that it's kind of like asking, "what is 4 × 4 ×4?"
·
·
·
·
·
·
·
Therefore, is the answer.