Question

sinplifique as expressões com os cálculos ​

Answer 1

Resposta:

Urgente

Resolva as equações

A)log3(2x+1)<log3 7

B)log0,8(x^2-6x+8)>log0,8 3

Answer 2

Resposta:

Explicação passo-a-passo:

a) (n+3)!/(n+1)! = (n+3)(n+2)(n+1)!/(n+1)! = (n+3)(n+2) = n² + 3n + 2

b) (n+5)!/(n+2)! = (n+5)(n+4)(n+3)(n+2)!/(n+2)! = (n+5)(n+4)(n+3) = (n² + 9n + 20)(n + 3) = n³ + 12n² + 47n + 60

c) (n-6)!/(n-5)! = (n-6)!/(n-5)(n-6)! = 1/(n-5)

d) n!/(n-2)! = n(n-1)(n-2)!/(n-2)! = n(n-1) = n² - n

e) (n+2)!/(n-1)! = (n+2)(n+1)n(n-1)!/(n-1)! = (n+2)(n+1)n = (n²+3n+2)n = n³ + 3n² + 2n