Question

If alpha and beta are the zeros of the quadratic polynomial x square - ( p + 6 )X + 2( 2p- 1) and if alpha + beta is equal to half Alpha into beta find p

Answer 1

a+b=1/2(ab)
p+6=1/2(2(2p-1))
2(p+6)=4p-2
2p+12=4p-2
2p-4p=-2-12
-2p=-14
p=7


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