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2. (x-2)(x-3)
3. (x+5)(x+5)
4. (x-4)(x+2)
5. (x+5)(x-2)
x+1=0 atau x+3 =0
x=-1 x=-3
2. (x-1)(x-5)=0
x-1=0 atau x-5=0
x=1 x=5