Question

Calcule:

a) 6!-5!-3.3!

b) 4!+6!-7.5!​

Answer 1

Explicação passo-a-passo:

a) 6! – 5! – 3 · 3!

$(6 \times 5 \times 4 \times 3 \times 2 \times 1) - (5 \times 4 \times 3 \times 2 \times 1) - 3 \times (3 \times 2 \times 1) \\ 720 - 120 - 3 \times 6 \\ 600 - 18 \\ 582$

b) 4! + 6! – 7 · 5!

$(4 \times 3 \times 2 \times 1) + (6 \times 5 \times 4 \times 3 \times 2 \times 1) - 7 \times (5 \times 4 \times 3 \times 2 \times 1) \\ 24 + 720 - 7 \times 120 \\ 744 - 840 \\ - 96$

Espero que seja isso.