Question

The sum of roots of equation x²-7x-9=0 is

Answer 1

Given:

=x²-7x-9=0

Here a=1, b=-7 , c=-9

Steps:

therefore from x=-b+-√b²-4ac/2a

x=-(-7)+-√(-7)²-4x1x(-9)/2(1)

x= 7+-√49+36/2

x=7+-√85/2

x=1/2(7+-√85)

Explanation:

Hope this will be helpful.