Question

verify the relation between the zeroes and the coefficient of x²_2x_8​

Answer 1

Answer:

the coefficient is 2

sorry I don't known the relations between zeros

Answer 2

Answer:

x²-2x-8=0

x²-(4-2)x-8=0

x²-4x+2x-8=0

x(x-4)+2(x-4)=0

(x-4)(x+2) =0

x-4=0

x=4

or, x+2=0

x=-2

if x=4

then,...

x²-2x-8

=(4)²-2.4 - 8

=16 - 16

=0

or... x= -2

then,....

x²-2x-8

= (-2)² -2(-2) -8

=4+4 - 8

=8 - 8

=0