Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\frac{a^{2}+3a+2}{a^{2}+2a+4}\div\frac{(a+1)^{2}}{a^{3}-8}\times\frac{a^{2}+4a+3}{a^{2}+a-2}$$

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