# How do you factor #27a^4 - a#?

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To factor 27a^4 - a, you can first look for common factors. In this case, both terms contain 'a'. Therefore, you can factor out 'a'. After factoring out 'a', you'll have 27a^3 - 1. This expression is in the form of a difference of cubes, which can be factored using the formula: (a^3 - b^3 = (a - b)(a^2 + ab + b^2)), where 'a' is 27a and 'b' is 1. Apply the formula to factor 27a^3 - 1. Therefore, the factored form of 27a^4 - a is (a(3a - 1)(9a^2 + 3a + 1)).

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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