Question

x^2-8x=9

Answer 1

Subtract 9 from both sides first to get a polynomial./

Answer 2

if we were going to complete the square what would add to both sides? 16

Answer 3

You don't need to use complete the square. You can simply use the quadtraci formula.

Answer 4

okay thanks

Answer 5

Or you can just factor by finding two numbers whose product is -9 and sum is -8
does that make sense?

Answer 6

@Luis_Rivera sneaky.

Answer 7

lol, its called the " phantom post"