@rahulshaitan ur absolutely right paaji.....
@JS-M said:Q. x+1/x = 1, find x^12+x^9+x^6+x^3+1 = ?.....thz questn posted by u......so according to ur logic x=1 soln, the answr of above questn should be 5....which z incorrect.....yr zara explan karna ........may be i am wrong...
@sampras said:x^3 =1 bhai again typo chek karo yaar last mein galti ho gayi
hmmmm jyaada padh liya lagta hai... (x^3+1) = (x+1)(x^2-x+1) = 0
so x^3=-1....ans will then be ...1
@harshgupta88 said: x+1/2x=2 What is the value of 8x^3+1/x^3 ??
-2 hai shayad solve nhi kiya hai
double kar k cube karo
@alkoszzz said:kaise karna hai??
x+(1/x)=1;==>1-x+x^2=0......eq.1
x^12+x^9+x^3+1=x^9(x^3+1)+1(x^3+1)=(x^9+1)(x^3+1)
=(x^9+1)(1+x)(1-x+x^2)
but from eq.1 (1-x+x^2)=0 therefore expression (x^9+1)(1+x)(1-x+x^2)=0
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@lalit5800 said: @harshgupta88 bhai answer is -5
bhai kuch aur hi uttar diya hai...40 diya hua hai :|
x^2-x+1=0
Multiplynig x+1 on both side eqn becomes
x^3+1=0
or X^3=-1
Putting value of x^3 in equation
-1^4+ -1^3 +-1^2 + -1 +1
=1
OOOO sorry bhai log khate khate type kar raha tha...error kar baitha.. upar se ek baar mein koi reply post bhi nahi horaha hai..... some problem with the thread donno.... basic idea was to make you all aware of the trick as these type qns are coming in almost all SSC exams in 2012...
52 hai answer i guess
@sampras said: OOOO sorry bhai log khate khate type kar raha tha...error kar baitha.. upar se ek baar mein koi reply post bhi nahi horaha hai..... some problem with the thread donno.... basic idea was to make you all aware of the trick as these type qns are coming in almost all SSC exams in 2012...
bhai mujhe bhi batao iss trick ke baare me :)