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578vishnu
There are various ways of handling an even exponent term.
Don't plot it on the number line to avoid confusion. It may come into play while writing out the range only if the inequality has an equal to sign too.
e.g. if the given inequality is this (discussed in the post)
\((x – 4)(x – 2)(x + 8)^4 \leq 0\)
the required range is \(2 \leq x \leq 4\) or x = -8
There is no way I know to use x ≠ 0 the first time I do this question, probably one of the hardest questions in gmat.
24 Aug 2021, 06:34
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To Bunuel, chetan2u VeritasKarishma
Can we solve this question like this:
Given X^3 < x^2
since, the minimum value any square can have is X^2<=0
therefore, X^3<0 and it follows that x<0
Now, we have to find a specific NEGATIVE value of x from the given statements, which can ONLY be proved from the statement 2. Please let me know if this is the correct approach?
Can we solve this question like this:
Given X^3 < x^2
since, the minimum value any square can have is X^2<=0
therefore, X^3<0 and it follows that x<0
Now, we have to find a specific NEGATIVE value of x from the given statements, which can ONLY be proved from the statement 2. Please let me know if this is the correct approach?
