1. if alpha n beta are zero's of xsq_7x+7 find the value of (a) 1/alpha + 1/beta - alphabeta
(b) alpha sq + beta sq
(c) alpha cube + beta cube
(d) alpha - beta
Since α and β are zeros of
Therefore,
Sum of zeros , α+β = =
and
product of zeros , αβ = =
Now,