Question

Re-write the quadratic function below in standard form
y= -(x-3)(x+7)
Y=?

Answer 1

Answer:

y=-x2-7x-3x-21

Step-by-step explanation:

Answer 2

Answer:

$\document\\\begin{document}\\y=-x^2-4x+21$

Step-by-step explanation:

If you factor the equation using FOIL you get x^2, -3x, 4x, and -21. Then we change the signs because of the negative and get -x^2, 3x, -4x, and 21, which we can simplify to y=-x^2-4x+21