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nini07 nini07
wrote...
Donated
Posts: 385
13 years ago
Rewrite each polynomial in standard form. Then identify the leading coefficient, degree, and number of terms. Name the polynomial.

5. 4x^2-3x^3+6x+7

7. 1-11x+9x^2

Add or subtract. Write your answer in standard form.

9.(8x^3-4x^2-3x+1) - (1-5x^2+x)

11. (5x-2x^2) - (4x^2+6x-9)

Find each product.

17. 5x^2(3x-2)

19. ab^2(a^2 - a+ab)

21. (2x+5)(x^3 - x^2+1)

23. (x+4)(x^4 - 3x^2+x)

25. A cylinder has a height of x^2 - x - 3and a radius of 2x. Express the volume of the cylinder as a sum of monomials.

Divide by using long division.

27. (8x^4 + 6x^2 - 2x + 4) / (2x - 1)

Divide by using synthetic division.

29. (x^3 + 2x - 1) / (x-2)

Determine whether the given binomial is a factor of the polynomial P(x).

31. (x+3); P(x)=x^3+2x^2-5

33. (x-2); P(x)=2x^3-3x^2=x-6

Factor each expression.

35. 4x^3-8x^2-x+2

37. 16x^3-2

Identify all of the real roots of each equation.

39. x^3+6x^2+9x+2=0

41. x^4-12x^2+27=0

43. x^3-5x^2+4=0

Write the simplest polynomial function with the given roots.

45. -3,2,4

47. - square root 2, -1

49. square root of 2, square root of 3

Solve the equation by finding all roots.

51. x^3-x^2=4x-4=0

53. x^4-63/4x^2-4=0
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12 Replies
HOPE*FAITH*LOVE

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Replies
wrote...
Educator
13 years ago Edited: 13 years ago, bio_man
Hi Nini,

\(-3x^3+4x^2+6x+7\)

Leading coefficient is -3, degree of 3, 4 terms

\(9x^2-11x+1\)

Leading coefficient is 9, degree of 2, 3 terms
wrote...
Educator
13 years ago
That's for 5 and 7. I made a little error, which I corrected.
nini07 Author
wrote...
Donated
13 years ago
THANK YOU SO MUCH SO IF YOU KNOW THE REST CAN YOU PLEASE HELP!!!! IM IN NEED OF HELP!!!!
HOPE*FAITH*LOVE
wrote...
Educator
13 years ago
9. \(8x^3+x^2-4x+2\)

11. \(-6x^2-x+9\)
wrote...
Educator
13 years ago
Find each product.

17. 5x^2(3x-2)

\(15x^3-10x^2\)

19. ab^2(a^2 - a+ab)

\(a^3b^2-(ab)^2+a^2b^3\)

21. (2x+5)(x^3 - x^2+1)

\(xx^4+3x^3-5x^2+2x+5\)

23. (x+4)(x^4 - 3x^2+x)

\(x^5+4x^4-3x^3-11x^2+4x\)
wrote...
Educator
13 years ago
25. A cylinder has a height of x^2 - x - 3and a radius of 2x. Express the volume of the cylinder as a sum of monomials.

\({\pi}r^2(h)
{\pi}(2x)^2(x^2-x-3)
(4x^4-4x^3-12x^2){\pi}={{V}_{cylinder}}
\)
wrote...
13 years ago
Write the simplest polynomial function with the given roots.

45. -3,2,4 ... \((x+3)(x-2)(x-4) = f(x)\)

Set f(x) = 0, and you'll get -3,2,4
wrote...
13 years ago
47. - square root 2, -1

\((x+{sqrt{\2}})(x+1)=f(x)\)

49. square root of 2, square root of 3

\((x-{sqrt{\3}})(x-{sqrt{\2}})=f(x)\)
wrote...
13 years ago
If you set \(f(x)\) of both 47 and 49 equal to 0, you get the roots.
wrote...
Educator
13 years ago
Nini, do you still need help on these?
nini07 Author
wrote...
Donated
13 years ago
I have solved them all with the forums help. Thanks  Person Raising Both Hands in Celebration
HOPE*FAITH*LOVE
wrote...
Educator
13 years ago Edited: 13 years ago, bio_man
I have solved them all with the forums help. Thanks  Person Raising Both Hands in Celebration

Awesome, we now have a tablet PC to which we can use to answer math/chemistry questions, so don't hesitate to ask more math questions. Slight Smile
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