If the circles x^{2}+y^{2}=9 and x^{2}+y^{2}+2 \alpha x+2 y+1=0 touch each other internally, then \alpha is equal to

MHT CET 2021 Math Solved Paper

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If the circles x2+y2=9 and x2+y2+2αx+2y+1=0 touch each other internally, then α is equal to

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