Question

IF (3+5/x)(9-15/x+25/(x)^2) =3
then find the value of
(3-5/x)(9+15/x+25/(x)^2)
and hence find the value of x also.​

Answer 1

Answer:

Given

(3x−5y)(9x2+25y2+15xy)

We shall use the identity

(a-b)(a2+ab+b2)=a3-b3

We can rearrange the

(35-5y)(92x2+25y2+15xy)as

=((3x-5y)((3x)2+(5y)2 +(3x)(5y))

=(3x)3-(5y)3

=(3x)×(3x)×(3x)−(5y)×(5y)×(5y)

=27x3−125y3

Hence the Product value of

(3x-5y)(92x2+25y3+15xy)is

27x3-125y3.

Answer 2

X= (-5) / {2*(3) ^(1/3) }.

Step-by-step explanation:

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