Yes on a,b,c if you are going to use the quadratic formula....or you may be ble to 'see' that it factors in to:
(x+5)(x+4) = 0 then x = -5 or -4
Yes on a,b,c if you are going to use the quadratic formula....or you may be ble to 'see' that it factors in to:
(x+5)(x+4) = 0 then x = -5 or -4