Question

a quadratic polynomial whose zeroes are - 4 and -5 is
a)2 − + 20
b)x^2+x-20
c)x^2/5-x/5-4
d)52 + 5 − 100

Answer 1

Step-by-step explanation:

alpha = -4

beta = -5

Then the polynomial is of the form,

= x² -(alpha + beta )x + (alpha × beta)

x² - (-4 + -5) x + ( -4 × -5)

x² - (-9)x + 20

x² + 9x + 20