Answer:
x1,2= 3;-2
Explanation:
3x^2 - 3x - 18=0
Counting discriminant: (-3)^2-4*3*-18=225
X1,2= 3+-√225/2*3= 3+-15/6=3;-2
X1=3, x2=-2
Answer: 3(x-3)(x+2) is the solution
Common factor
Use the sum-product pattern
Common factor from the two pairs
Rewrite in factored form
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