Answer:
1. x²+3x+2 = 0
(x+1)(x+2)
2. ss: x+1 = 0 >>> x = -1
ss: x+2 = 0 >>> x = -2
3. for x = -1
(-1)²+3(-1)+2 = 1-3+2 = 3-3 = 0
for x = -2
(-2)²+3(-2)+2 = 4-6+2 = 6-6 = 0
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Answer:
1. x²+3x+2 = 0
(x+1)(x+2)
2. ss: x+1 = 0 >>> x = -1
ss: x+2 = 0 >>> x = -2
3. for x = -1
(-1)²+3(-1)+2 = 1-3+2 = 3-3 = 0
for x = -2
(-2)²+3(-2)+2 = 4-6+2 = 6-6 = 0