Answer:
y= -1(x-1)(x+3)
Step-by-step explanation:
The way you can solve this is by factoring and using quadratics
First, you factor out the -1 in the x term
Then, you rewrite the equation into
y= -1(x^2+2x-3)
After that you factor as normal into y= -1(x-1)(x+3)