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I Am In Class 9 Please Help Me With My Doubts If x = 1+5 1/3 +5 2/3 then find the value of x 3 -3x 2 -12x+6

I Am In Class 9


Please Help Me With My Doubts



If x = 1+51/3+52/3 then find the value of x3-3x2-12x+6



Grade:9

3 Answers

Shivam Dimri
43 Points
8 years ago

its actually a geometric progression

x = (24/(51/3 - 1))

put it in the expression

.....

its too wierd i beilive!!

Akash Kumar Dutta
98 Points
8 years ago

(x-1)^3=5+25 + 3.5(x-1)
then simplyfy

Abhishekh kumar sharma
34 Points
8 years ago

we know x=1+5^1\3+5^2\3

then we have x-1=a+a^2 where a=5^1\3

then put (x-1)^3=a+a^2

and solve

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