Question

plz answer first 2 parts​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

hey frnd here is your answer

Step-by-step explanation:

let p and q be the roots of x²-5x+4.

so sum of roots p+q= -b/a = 5.

product of roots =c/a= 4.

you have asked the following

1. p-q
2. p²+q²

so p²+q²= (p+q)²-2pq

=(5)²-2(4)

= 25-8

=17.

and for p-q = |D|/a where D is Discriminat and

D=b²-4ac. so for this x²-5x+4 D= 5.

p-q = 5.

So p-q=5.

p²+q²=17 .

here u can replace p as alpha and q as beta.

may be my p-q would be wrong plzz check it .

I hope you get your answer

thnx for asking

plzz mark as brainlist..