Question

I need help to figure out how to simplify this expression down​

Answer 1

Answer:

This is a tricky question.

You can pull the fraction apart but with caution.

-21/3 + (±$b^{2}$ - 4ac)/3

Ignore the A in the equation below, it's a bug.

$\frac{-21}{3} + \frac{±b^2 - 4ac}{3}$