Question

p pppppppppppppppppppppppppppppp​

Answer 1

Penjelasan dengan langkah-langkah:

barisan aritmatika

a. 4, b, c, d, 16

Un = a + (n - 1)b

U₂ = 4

a + b = 4 ............ (1)

U₆ = 16

a + 5b = 16 ....... (2)

eliminasi (2) dan (1)

a + 5b = 16

a + b = 4

--------------- --

0 + 4b = 12

b = 12/4

b = 3

a + b = 4

a + 3 = 4

a = 4 - 3

a = 1

barisan aritmatikanya

1, 4, 7, 10, 13, 16

a = 1 ; c = 10 ; d = 13

hasil dari :

(a.c) - d = (1 x 10) - 13

(a.c) - d = 10 - 13

(a.c) - d = -3