Mathematics · Progressions and Quadratic Equations
If a, b, c are in A.P. and if the equations (b - c)x2 + (c - a)x + (a - b) = 0 and 2(c + a)x2 + (b + c)x = 0 have a common root, then:
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- 1a2, b2, c2 are in G.P.
- 2c2, a2, b2 are in A.P.
- 3a2, c2, b2 are in A.P.✓
- 4a2, b2, c2 are in A.P.
Correct answer
a2, c2, b2 are in A.P.
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