substitusikan x=2,4 , s= 3, fan t = 2 hitunglah

x = 2,4
x = 2 , x = 4

a. 4x
x = 2 >> 4 x 2 = 8
x = 4 >> 4 x 4 = 16 ( 8,16 )

b. 9x + 2
x = 2 >> 18 + 2 = 20
x = 4 >> 36 + 2 = 40 (20,40)

c. 3x+1
x = 2 >> 6 + 1 = 7
x = 4 >> 12 + 1 = 13 (7,13)

d. 5x^2 + 2
x = 2 >> 20+2 = 22
x = 4 >> 80+2 = 82 ( 22,82 )

e. (2x)^2 - 3
x = 2 >> 16 -3 = 13
x = 4 >> 64 -3 = 61 ( 13,61 )

f. (3x^2+1) / (2x-1)
x = 2 >> (12+1) / (4-1) = 13/3
x = 4 >> (48+1) / (8-1) = 49/7 = 7

( 13/3 , 7 )

a) 4x = 4 • (2,4) = 9,6

b) 9x +2 = 9•(2,4) + 2 = 21,6 +2 = 23,6

c) 3x - 1= 3•(2,4) -1 = 7,2 - 1 = 6,2

d) 5x²+2= 5•(2,4)² +2= 28,8 +2 = 30,8

e) (2x)²-3= (2•2,4)²-3= 23,04-3= 20,04

f) (3x² +1) : (2x -1) = (3•2,4² + 1) : (2•2,4 -1) = (52,84) : (3,8) = 13,64