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Factor the greatest common factor: [tex]-5k^2 + 20k - 30[/tex].

A. [tex]-1(5k^2 - 20k + 30)[/tex]
B. [tex]-5(k^2 - 4k + 6)[/tex]
C. [tex]-5k(k^2 - 4k + 6)[/tex]
D. [tex]-5(k^2 + 4k - 6)[/tex]


Sagot :

Absolutely, let's go through the steps to factor the greatest common factor of the polynomial [tex]\(-5k^2 + 20k - 30\)[/tex]:

1. Identify the Polynomial Terms:
The polynomial given is [tex]\(-5k^2 + 20k - 30\)[/tex].

2. Identify the Greatest Common Factor (GCF):
We observe that each term in the polynomial [tex]\(-5k^2\)[/tex], [tex]\(20k\)[/tex], and [tex]\(-30\)[/tex] can be divided by [tex]\(-5\)[/tex].

- Largest common factor of the coefficients (-5, 20, -30) is -5.

3. Factor Out the GCF:
- When we factor [tex]\(-5\)[/tex] out of each term, we essentially divide each term by [tex]\(-5\)[/tex]. Let's perform this operation step-by-step:

[tex]\[ -5k^2 + 20k - 30 = -5(k^2) + -5(-4k) + -5(6) \][/tex]

Which simplifies to:
[tex]\[ -5(k^2 - 4k + 6) \][/tex]

So, the factored form of the polynomial [tex]\(-5k^2 + 20k - 30\)[/tex] after factoring out the greatest common factor is:
[tex]\[ -5(k^2 - 4k + 6) \][/tex]

Thus, the solution is the greatest common factor [tex]\(-5\)[/tex] and the factored polynomial is:
[tex]\[ (-5, "-5(k^2 - 4k + 6)") \][/tex]

This demonstrates a step-by-step method to factor out the greatest common factor from the given polynomial.
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