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Home / Doubts and Solutions/CBSE/Class 5/Mathematics

 class 10  chapter 2 :-i f space alpha space a n d space beta space a r e space t h e space t w o space z e r o e s space o f space p left parenthesis x right parenthesis equals 4 x squared-2X+(K-4) and alpha equals 1 divided by beta space comma f i n d space t h e space v a l u e s space o f space k.

Asked by niharika 1st June 2015, 11:04 AM
Answered by Expert
Answer:

p left parenthesis x right parenthesis equals 4 x squared minus 2 x plus left parenthesis k minus 4 right parenthesis S i n c e space alpha comma beta space a r e space t h e space r o o t s space o f space t h e space e q u a t i o n therefore alpha plus beta equals 2 over 4 equals 1 half rightwards double arrow alpha beta equals fraction numerator k minus 4 over denominator 4 end fraction rightwards double arrow 1 over beta. beta equals fraction numerator k minus 4 over denominator 4 end fraction rightwards double arrow 1 equals fraction numerator k minus 4 over denominator 4 end fraction rightwards double arrow k minus 4 equals 4 therefore k equals 8 V a l u e space o f space k space i s space 8

Answered by Expert 1st June 2015, 6:00 PM
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