Tolong ya siapapun yang bisaa:)) Pake cara secepatnya ya,penting soalnya Makasihh:))

1. x^2+3x-18=0
(x-3)(x+6) = 0
x=3 x=-6

2. 3x^2+3x-18=0
(3x-6)(x+3) = 0
x=2 x=-3

3. (x-(5)) (x-(6)) =0
x^2-6x-5x+30 = 0
x^2-11x+30 = 0

4. 2x^2+4x-10=0
x1+x2 = -b/a
x1+x2 = -4/2
= -2

5. x^2+4x-12=0
x1 (dikali) x2 = c/a
x1 (dikali) x2 = -12/1
= -12
Maka (-12)^2 = 144