If 1 is a root of the equations ay2 + ay + 3 = 0 and y2 + y + b = 0, then find the value of ab. (2012D)
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Step-by-step explanation:
Given, 1 is the root of both the equations. ∴ y = 1 will satisfy both these equations. ∴ a b = ( - 3 2 ) × ( - 2 ) = 3 [Using (1)&(2)]. Thus, the value of ab is 3.
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