Question

by taking X=3by4 and Y=-5by6 verify that X÷YnotequalltooY÷X
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Answer 1

Answer:

Let p(x)=x3+3x2−x−3

p(1)=(1)3+3(1)2−1−3=0

p(−1)=(−1)3+3(−1)2+1−3=0

p(−3)=(−3)3+3(−3)2+3−3=0

Hence, 1,−1 and −3 are the zeroes of the given polynomial.

If α,β,γ, are roots of a cubic equation  ax3+bx2+cx+d=0, then

1.   α+β+γ=−ab

2.  α×β+γ×β×γ+α×γ=ac

3.   α×β×γ=−ad

⇒−3=−ab−3=−13=−3⇒−1=−11−1=−1

Step-by-step explanation:

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