Which expression is not a polynomial? a. 3x^3+5x-4b. (2/5) x-7c. 5d. 3^(1/2)+5which answer expresses the polynomial in standard form? 12x^3+5+5x^2-6x^2-3x^3-9-x a. 9x^3-x^2-x+45b. 9x^3+x^2-x-2c. 9x^5-x^2-x-4d. 9x^3-x^2-x-4which expression is equivalent to this expression? [4x^2-4x+5] - [3x^2-6x+2]a. 12x^2-10x+7b. x^2-2x+3c. x^2+2x+3d. x^2-10x+7which expression is equivalent to (2x-3) (5x+4)a. 10x^2-12b. 10x^2-7x-12c. 10x^2+23x+12d. 7x^2-2x+1which expressions represents the area of the rectangle? (2h-1) and 4h+3a. 8h^2-3b. 6h+2c. 8h^2+2h-3d. 8h^2-2h+3which expression represents the polynomial in factored form? 6b^3+9b^2-12ba. 3b (2b^2+3b-4)b. 3b^3 (2b^2+3b-4)c. 3b (2b^2+9b^2-12b)d. 3b^2 (3b^2+6b-9)which expression represents the polynomial factored form? 4x^2-25a. (4x+5) (4x-5)b. (4x-5) (4x-5)c. (2x+5)(2x-5)d. (2x-5)(2x-5)

1) D

2) D

3) C

4) B

5) C

6) A

7) C

Step-by-step explanation:

1) A polynomial contains integral positive degrees of x .

Though 5 does not contain x, we can take as x power 0

But 3^(1/2)+5 contains no x term, and an irrational term.

Hence option D

2) Grouping like terms and write in descending powers of x we get

d. 9x^3-x^2-x-4 is right answer

3) [4x^2-4x+5] - [3x^2-6x+2] = [4x^2-4x+5] - 3x^2+6x-2

=  X^2+2x+3

So option c

4) By multiplication we get product as

B. 10x^2-7x-12

5) Rectangle area = length x width = (2h-1) (4h+3)

= 8h^2+2h-3

Option C

6) Take common factor b outside

Answer is a. 3b (2b^2+3b-4)

7) Use the identity a^2-b^2

C. (2x+5)(2x-5) is answer

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

x+14

step-by-step explanation: