Asap simplify the expressions below 1) 8 + (x-4 )2 2) - (x+3) + 3(-x -6) 3) 2(x -y +z) -4(x -y +z)

1) 8 + (x-4 )^2

= 8 + x^2 -8x + 16

= x^2 - 8x + 24

2) - (x+3) + 3(-x -6)

= -x - 3 -3x - 18

= -4x - 21

3) 2(x -y +z) -4(x -y +z)

= (x -y +z) (2 - 4)

= (x -y +z)(-2)

= -2x + 2y -2z

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional