Question

if one zero is -5 of the polynomial 5x2+8x-k find the value of k​

Answer 1

Answer:

85 is the value of K

hope u understand!!

Answer 2

Answer:

alpha+beta=-b/a

-5+beta=-8/5

beta=-8/5+5

beta=8+25/5

beta=33/5

alphabeta=c/a

-5*33/5=c/a

-33=c/5

-33*5=c

-165=c

therefore value of k =-165