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J i k a space x subscript 1 space d a n space x subscript 2 space a k a r minus a k a r space 2 x squared minus 10 x plus 4 equals 0 comma space n i l a i space d a r i space x subscript 1 squared plus x subscript 2 squared minus 3 x subscript 1 x subscript 2 equals....

  1. 20

  2. 15

  3. 10

     

  4. 5

  5. 1

A. Acfreelance

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P e n j u m l a h a n space d a n space p e r k a l i a n space a k a r minus a k a r space p e r s a m a a n space k u a d r a t space a x squared plus b x plus c equals 0 space y a n g space m e m i l i k i space a k a r minus a k a r space x subscript 1 d a n space x subscript 2 comma y a i t u colon  x subscript 1 plus x subscript 2 equals negative b over a  x subscript 1. x subscript 2 equals c over a  D a n  x subscript 1 squared plus x subscript 2 squared equals left parenthesis x subscript 1 plus x subscript 2 right parenthesis squared minus 2 x subscript 1. x subscript 2

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