Question

if alpha and beta are the zeroes of the polynomial x2-7x+5 find the value of alpha/beta +beta/alpha

Answer 1

Answer:

Step-by-step explanation:

p(x) = x2-7x+5

alpha and beta are the zeroes

alpha + beta = -b/a

                     = 7/1 = 7

alpha x beta = c/a

                     = 5/1 = 5

alpha/beta + beta/alpha = (alpha^2 + beta^a) / (alpha x beta)

= [(alpha + beta )^2 - 2 x alpha x beta] / (alpha x beta)

= 49 - 10 / 5

= 39 / 5

Answer 2

Answer

p(x)=x^-7x+5

=a=1,b=-7,c=5

=alfa+beta=-b/a=7/1

=alfa×beta=5

=a/b+b/a

=a^+b^÷ab

=7^÷5

=49÷5

a=49,b=5