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द्विघात समीकरण

Question
CBSEHHIMAH10010457

straight x cubed space minus space 4 straight x squared space minus space straight x space plus space 1 space equals space left parenthesis straight x space minus space 2 right parenthesis cubed

Solution
straight R. straight H. straight S. space equals space left parenthesis straight x space minus space 2 right parenthesis cubed
space space space space space space space space space space space equals space straight x cubed space minus space left parenthesis 2 right parenthesis cubed space minus space 3. straight x.2 space left parenthesis straight x space minus space 2 right parenthesis
space space space space space space space space space space space equals space straight x cubed space minus space 8 space minus space 6 straight x squared space plus space 12 straight x
space space space space space space space space space space space equals space straight x cubed space minus space 6 straight x squared space plus space 12 straight x space minus space 8
therefore space straight x cubed space minus space 4 straight x squared space minus space straight x space plus 1 space equals space straight x cubed space minus space 6 straight x squared space plus space 12 straight x space minus space 8
rightwards double arrow space minus space 4 straight x squared space plus space 6 straight x squared space minus space straight x space minus space 12 straight x space plus space 1 space plus space 8 space equals space 0
rightwards double arrow space 2 straight x squared space minus space 13 space straight x space plus space 9 space equals space 0
because space यह space सम ी करण space ax squared space bx space plus space straight c space equals space 0 space र ू प space म े space ह ै comma space जह ाँ
space space space straight a space equals space 2 comma space space straight b space equals space minus space 13 comma space space straight c space equals space 9
अत colon space द ि य ा space ह ु आ space सम ी करण space द ् व ि घ ा त space सम ी करण space ह ै।