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Submitted by yankee on 20. May 2007 - 14:54.
Multiple choice
If one root of x to the 2nd + bx = 6 is -1, then b is
(1) 1
(2) -1
(3) 5
(4) -5
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more help
Submitted by yankee on 20. May 2007 - 14:54.
Multiple choice
If one root of x to the 2nd + bx = 6 is -1, then b is
(1) 1
(2) -1
(3) 5
(4) -5
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IF -1 is one of the root
IF -1 is one of the root then when we put x=-1 it should satisfy the equation
(-1)^2 + b(-1) = 6 or
1-b = 6 or
b =-5 Answer