Mathematics · Quadratic Equations
The condition that the equations ax2 + bx + c = 0 and a'x2 + b'x + c' = 0 have a common root is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(bc' - b'c)2 = (ca' - c'a)(ab' - a'b)
- 2(ab' - a'b)2 = (ca' - c'a)(bc' - b'c)
- 3(ca' - c'a)2 = (bc' - b'c)(ab' - a'b)✓
- 4(ca' + c'a)2 = (bc' + b'c)(ab' + a'b)
Correct answer
(ca' - c'a)2 = (bc' - b'c)(ab' - a'b)
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