Kem12 wrote:
I solved this within 5 secs using a different approach. Pls let me know if Its a correct approach...
MathRevolutionI modified the question by dividing modulus Y on both sides and translated the question to is x positive? And option A answered the question straight away...
Posted from my mobile deviceWe can't both sides of the question by y, since we don't know if y is zero or not.
If y is zero, we can't divide them by y.
This kind of divisions is one of common mistakes in algebra.[/quote]
Hi thanks for your reply but you seem to misinterpret me. I said I divided by 'modulus y' not just ' y'...i felt. Since it's not an inequality the sign would not matter... The right hand side will always be positive.
MathRevolution[/quote]
The modulus of y might be zero.
That's why we cannot divide both sides by 'the modulus of y' either.[/quote]
Very clear sir.
Thank you