C.6 12. Expand & simplify: (x - 5)(x-4)

1 answer:

6 0

Answer:

Step-by-step explanation:

(x - 5)(x-4)

= x(x) - 4(x) - 5(x) - 4(-5)

= x^2 - 4x - 5x + 20

= x^2 - 9x + 20

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