How would I solve this problem?

Answer:
(x+1)²=-1
Step-by-step explanation:
x²-7x=-9x-2
x²+2x+2=0
If you solved this using the quadratic formula, you’d end up with -1+i and -1-i.
but if you subtracted 1 from both sides, you’d have
x²+2x+1=-1
Which is:
(x+1)²=-1