find the sum of roots of equation 2x²-x-1
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Heya dear !!!
2X² - X +1
=> 2X² -2X + X +1
=> 2X ( X-1) 1 ( X -1)
=> ( X-1) ( 2X+1) = 0
=> ( X-1) = 0 OR ( 2X+1) = 0
=> X = 1 OR X = -1/2
Sum of the roots of the polynomial. = 1 +(- 1/2 ) = 1 -1/2 2-1/2 = 1/2
HOPE IT WILL HELP YOU...... :-)
2X² - X +1
=> 2X² -2X + X +1
=> 2X ( X-1) 1 ( X -1)
=> ( X-1) ( 2X+1) = 0
=> ( X-1) = 0 OR ( 2X+1) = 0
=> X = 1 OR X = -1/2
Sum of the roots of the polynomial. = 1 +(- 1/2 ) = 1 -1/2 2-1/2 = 1/2
HOPE IT WILL HELP YOU...... :-)
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