Question

if a & b are roots of x²-9x-3=0 then find (a^10+b^10)-3(a^8+b^8)/a^9+b^9​

Answer 1

Answer:

Given equation is:

x2−9x+20=0

⇒x2−5x−4x+20=0 

⇒(x−4)(x−5)=0

⇒x=4andx=5