Which of the following is not a polynomial identity? O A. a2 - 62 = (a + b)(a - b)
B. (22 + b)(c + x2) - (ac-bop)* + (ad + bc)
O C. a3 – 62 = (a - b)(a2 + ab + b?)
O D. 2° +6° = (a - b) (82 - ab+b?)

B

because A,C,D are 3 polynomial identity => B isn't

Step-by-step explanation:

B is not a polynomial this correct

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

one of each metals

step-by-step explanation: