Two circles each of radius 5 units touch each other at the point (1,2) – InterviewSolution

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1.	Two circles each of radius 5 units touch each other at the point (1,2). If the equation of their common tangent is 4x+3y=10, and C1(α,β) and C2(γ,δ), C1≠C2 are their centres, then \|(α+β) (γ+δ)\| is equal to
Answer» Two circles each of radius $5$ units touch each other at the point $(1, 2)$ . If the equation of their common tangent is $4 x + 3 y = 10$ , and $C_{1} (α, β)$ and $C_{2} (γ, δ), C_{1} \neq C_{2}$ are their centres, then $\| (α + β) (γ + δ) \|$ is equal to

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