Sum and product of roots (help) (1 Viewer)

Saini

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Find the value of n in the equation 2x^2 -5(n-1)x +12=0 If two roots are consecutive.

The answer in the book is n= -1 , 3
 

Saini

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is this the next step

( sub 2 into n )

2x^2+5x+12=0

=-5 root 5^2 - 4(2)(12)/4

=-5 root 25 -96/4

there is no solution
 

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