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which expression is not a polynomial?

a. 3x^3+5x-4
B. (2/5) x-7
C. 5
D. 3^(1/2)+5

which answer expresses the polynomial in standard form?
12x^3+5+5x^2-6x^2-3x^3-9-x

a. 9x^3-x^2-x+45
b. 9x^3+x^2-x-2
c. 9x^5-x^2-x-4
d. 9x^3-x^2-x-4

which expression is equivalent to this expression?
[4x^2-4x+5] - [3x^2-6x+2]

A. 12x^2-10x+7
B. x^2-2x+3
C. X^2+2x+3
D. x^2-10x+7

which expression is equivalent to (2x-3) (5x+4)
a. 10x^2-12
B. 10x^2-7x-12
C. 10x^2+23x+12
D. 7x^2-2x+1


which expressions represents the area of the rectangle? (2h-1) and 4h+3

A. 8h^2-3
B. 6h+2
C. 8h^2+2h-3
D. 8h^2-2h+3

which expression represents the polynomial in factored form?
6b^3+9b^2-12b
a. 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^2-25
a. (4x+5) (4x-5)
b. (4x-5) (4x-5)
C. (2x+5)(2x-5)
D. (2x-5)(2x-5)

Respuesta :

Answer:

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

ashrinbhuiyan

Answer:

1) D

2) D

3) C

4) B

5) C

6) A

7) C

Step-by-step explanation:

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