Question

33. What is the sum of the roots of the function : y= 2x2 + 2x - 24?
A)-1
B) 1
C) 12
D -12
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Answer 1

Answer:

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Step-by-step explanation:

ANSWER

((α+2β)1+(β+2α)1)=(α+2β)(β+2α)β+2α+2β+α

=αβ+2β2+2α2+4αβ3(α+β)=5αβ+2(α2+β2)3(α+β)

=5αβ+2((α+β)2−2αβ)3(α+β)=2(α+β)2+αβ3(α+β)    →(I)

Since α,β are the roots of 2x2−4x+1=0,

Sum of the roots =α+β=−ab=−(−4)/2=2  →(II)

Product  of the roots =αβ=ac=1/2  →(III)

Substituting (II),(II

Answer 2

Answer:

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