Question

Find the sum of the zeros of the polynomial y square + 9 y + 20

Answer 1

Answer:

ysq.+9y+20

ysq.+4y+5y+20

y(y+4)+5(y+5)

(y+4) (y+5)

y=-4 (alpha)

y=-5(beta)

alpha + beta=-b/a

alpha+beta=-9

check:

(-4)+(-5)=-9

-9=-9

Hence

The Sum of Two zeroes is -9.