Factor. f^2 - 20f + 19 ____

Identify b and c: Identify b and c in the quadratic expression f^2 - 20f + 19. b = -20, c = 19.Find two numbers: Find two numbers that multiply to 19 and add up to -20. Hmm, let's see... 19 is prime, so the only numbers that multiply to 19 are 1 and 19. But we need them to add up to -20, so they should be -1 and -19. -1 * -19 = 19, -1 + -19 = -20.Write factored form: Write the factored form using the numbers found. The factored form is (f - 1)(f - 19).

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Factor. $\newline$ $f^2 - 20f + 19$

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Q. Factor.

\newline

f^2 - 20f + 19

Identify $b$ and $c$ : Identify $b$ and $c$ in the quadratic expression $f^2 - 20f + 19$ . $\newline$ $b = -20$ , $c = 19$ .
Find two numbers: Find two numbers that multiply to $19$ and add up to $-20$ . $\newline$ Hmm, let's see... $19$ is prime, so the only numbers that multiply to $19$ are $1$ and $19$ . $\newline$ But we need them to add up to $-20$ , so they should be $-1$ and $-19$ . $\newline$ $-1 \times -19 = 19$ , $-20$ $0$ .
Write factored form: Write the factored form using the numbers found. $\newline$ The factored form is $(f - 1)(f - 19)$ .