Question

calcule o valor das expressões y=3p,-2A4,2-6C6,4

Answer 1

qual o valor de y=3p,-2A4,2-6C6,4?

3P7 = 3. 7! = 3 . 7.6.5.4.3.2.1 = 3 . 5040 = 15120

2.A(4,2) = 2 . (4!/(4-2)!) = 2 . (4!/2!) = 2 . 4.3.2!/2!  = 2 . 4 . 3 = 24

6C(6,4) = 6 . (6!/4!(6-4)! = 6 . (6!/4!2!) = 6 . (6.5.4!/4!2!) = 6 . (6.5/2!) = 6 . 15 = 90

Reagrupando tudo teremos:

Y = 3P7 - 2A(4,2) - &C(6,4)

Y = 15120 - 24 - 90

Y = 15006

Espero ter ajudado