Question

Solve x^2+ 18 = –9x

Answer 1

add 9x to both sides

x^2+9x+18=0
then use the coefficients a=1, b=9 c=18 and use quadratic formula

Answer 2

or you can simply factor (x+3)(x+6)

x=-3,-6

Answer 3

quadratic will get the same answers as above but takes a little bit longer it's late and i didn't see the factors

Answer 4

ok
x^2+9x+18 = 0 (Move all terms to on side and arrange in order of powers)
(x+6)(x+3)=0 (factor)
set both equal to zero and get x = -6 or -3