Let a , b , c , d ∊ R. If the equations 2bx^2 + 3cx - d = 0 and 2ax^2 + 3bx + 4c = 0 have a common root and \frac{4bc+ad}{k(b^2-ac)} = \frac{bd+4c^2}{4bc+ad} , then k =

AP EAMCET Engineering 23 Apr 2019 Shift 1 Paper

Section: Mathematics

Question : 14 of 160

Marks: +1, -0

Let a , b , c , d ∊ R. If the equations 2bx2 + 3cx - d = 0 and 2ax2 + 3bx + 4c = 0 have a common root and

4bc+ad

k(b2−ac)

bd+4c2

4bc+ad

, then k =

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