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Factor the expression completely.

Hint: Start by factoring out the greatest common factor. Show your steps.

\[5x^7 + 15x^6 - 20x^5 - 60x^4\]

Answer :

Final answer:

To factor the expression 5x⁷+15x⁶−20x⁵−60x⁴, start by factoring out the greatest common factor, then factor the trinomial inside the parentheses, and finally further factor using the difference of squares formula.

Explanation:

To factor the expression 5x⁷+15x⁶−20x⁵−60x⁴, we start by factoring out the greatest common factor, which in this case is 5x⁴. Factoring out 5x⁴ from each term, we get:

5x⁴(x³ + 3x² - 4x - 12)

Next, we can factor the trinomial inside the parentheses. We can use grouping or any other factoring method. One way to factor the trinomial is:

5x⁴(x²(x + 3) - 4(x + 3))

Now, we can notice that (x + 3) is a common factor in both terms. Factoring it out, we get:

5x⁴(x + 3)(x² - 4)

Finally, we can further factor the expression x² - 4 using the difference of squares formula. It becomes:

5x⁴(x + 3)(x + 2)(x - 2)

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