21x²-2x+1/21=0 solve by factorisation ch-(quadratic equation).
sumikumar1714:
is that /21 is for only constant or full equation? pls say fast................
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Answered by
18
441x∧2-42x+1=0
441x∧2-21x-21x+1=0
21x(21x-1)-1(21x-1)=0
(21x-1)(21x-1)=0
x=1/21,1/21
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Answered by
23
21x²-2x+1/21=0
441x²- 42x +1= 0
441x² -21x -21x +1 =0
21x ( 21x - 1) -1 (21x -1) =0
(21x - 1) (21x -1) =0
now,
x = 1/21 , 1/21
441x²- 42x +1= 0
441x² -21x -21x +1 =0
21x ( 21x - 1) -1 (21x -1) =0
(21x - 1) (21x -1) =0
now,
x = 1/21 , 1/21
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