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"Designing cars consumes you; it has a hold on your spirit which is incredibly powerful. It's not something you can do part time, you have do it with all your heart and soul or you're going to get it wrong."

I think the question here is whether (1-n^4) is in the exponent or not...this is the misunderstanding I suppose.....if it in the exponent then your statement is not true..correct?

I think the question here is whether (1-n^4) is in the exponent or not...this is the misunderstanding I suppose.....if it in the exponent then your statement is not true..correct?

The question says: n^5*(1-n^4) ==> (1 - n^4) cannot be in the exponent.

If (1 - n^4) is in the exponent ==> the question will be n^[5*(1-n^4)]

Hope it helps.
_________________

Please +1 KUDO if my post helps. Thank you.

"Designing cars consumes you; it has a hold on your spirit which is incredibly powerful. It's not something you can do part time, you have do it with all your heart and soul or you're going to get it wrong."

(1) n^5(1 - n^4) < 0. For convenience rewrite this as \(n^5(n^4-1) > 0\) --> n can be positive as well as negative: consider n=2 and n=-1/2. Not sufficient.

(1)+(2) Since from (2) \(n^4 - 1 < 0\), then from (1) \(n^5\) must also be negative (in order n^5(n^4-1) to be positive). \(n^5<0\) means that n is negative. Sufficient.

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“Keep your head down, and work hard. Don’t attract any attention. You should be grateful to be here.” Why do we keep quiet? Being an immigrant is a constant...

“Keep your head down, and work hard. Don’t attract any attention. You should be grateful to be here.” Why do we keep quiet? Being an immigrant is a constant...