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I need help with about...

I need help with about 21 Algebra questions. Most of the problems I just need a double check on but there are a few that I'm completely lost. $50 dollars, any takers?

1. (4a^4-2a^3+4a^2+16a-10)+(a^5+10a^3+7a^2-4a+6)+(-7a^4+a^2-8a-6)

My answer = -3a^4+8a^3+12a^2+4a-10+a^5

2.(5q^2+5q)/(20q^2+25q)

my answer = (q+1)/(4q+5)

3. 6x^4-17x^2+5=0

my answer= x=√3/3,-√3/3,√10/2,-√10/2

4. Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, ax^2+bx+c=0 Solution: 5, only solution

my answer=?

5.∛(729x^8/y^3) Simplify by taking the roots of the numerator and the denominator

My Answer= (9x^2∛x^2)/y

6. Use rational exponents to write x^1/6*y^1/2*z^1/7 as a single radical expression

my answer=?

7. Find a polynomial for the perimeter and for the area of rectangle. One side n+5 other side n

my answer = ?

8. use rational exponents to simplify ∜x^8

my answer = x^2

9. find the vertex, line of symmetry, and the maximum or minimum value of f(x). f(x)=1/3(x+1)^2+9

my answer= ?

10. find all of the numbers for which the rational expression is undefined (n^3-5n)/(n^2-16)

my answer=?

11.find the following assume that variables can represent any real number √((a+1)^2)

my answer=?

12. rewrite with a rational exponent (5)√19

my answer=(19)^1/5

13. Jack usually mows his lawn in 3 hours. Marilyn can mow the same lawn in 6 hours. How much time would it take for them to mow the lawn together?

my answer=?

14. rationalize the denominator assume that all expressions under radicals represent positive numbers

√u-√v/√u+√v

my answer= (u-2√(uv+v))/(u-v)

15.∛y^13 ∛16y^14

my answer=2y^9∛2

16. 2/w=9/w-1/11

my answer= w=77

17. In a right triangle, find the length of the side not given b=2, c=√29

my answer=?

18. (30b^3+20b^2+30b+43)/(5b+5)

my answer=6b^2-2b+8+3/5b+5

19.find the variation constant and an equation of variation where y varies directly as x and y=32 when x=4. the variation constant of k= the equation of variation is y=

my answer=?

20. If the sides of a square are lengthened by 8cm, the area becomes 144cm^2. Find the length of a side of the original square

my answer= ?

21. what does it mean to refer to a 20in tv set or a 25in tv set? Such units refer to the diagonal of the screen. a 30in tv set has a width of 24in. what is the height?

my answer=?

1. (4a^4-2a^3+4a^2+16a-10)+(a^5+10a^3+7a^2-4a+6)+(-7a^4+a^2-8a-6)

My answer = -3a^4+8a^3+12a^2+4a-10+a^5

2.(5q^2+5q)/(20q^2+25q)

my answer = (q+1)/(4q+5)

3. 6x^4-17x^2+5=0

my answer= x=√3/3,-√3/3,√10/2,-√10/2

4. Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, ax^2+bx+c=0 Solution: 5, only solution

my answer=?

5.∛(729x^8/y^3) Simplify by taking the roots of the numerator and the denominator

My Answer= (9x^2∛x^2)/y

6. Use rational exponents to write x^1/6*y^1/2*z^1/7 as a single radical expression

my answer=?

7. Find a polynomial for the perimeter and for the area of rectangle. One side n+5 other side n

my answer = ?

8. use rational exponents to simplify ∜x^8

my answer = x^2

9. find the vertex, line of symmetry, and the maximum or minimum value of f(x). f(x)=1/3(x+1)^2+9

my answer= ?

10. find all of the numbers for which the rational expression is undefined (n^3-5n)/(n^2-16)

my answer=?

11.find the following assume that variables can represent any real number √((a+1)^2)

my answer=?

12. rewrite with a rational exponent (5)√19

my answer=(19)^1/5

13. Jack usually mows his lawn in 3 hours. Marilyn can mow the same lawn in 6 hours. How much time would it take for them to mow the lawn together?

my answer=?

14. rationalize the denominator assume that all expressions under radicals represent positive numbers

√u-√v/√u+√v

my answer= (u-2√(uv+v))/(u-v)

15.∛y^13 ∛16y^14

my answer=2y^9∛2

16. 2/w=9/w-1/11

my answer= w=77

17. In a right triangle, find the length of the side not given b=2, c=√29

my answer=?

18. (30b^3+20b^2+30b+43)/(5b+5)

my answer=6b^2-2b+8+3/5b+5

19.find the variation constant and an equation of variation where y varies directly as x and y=32 when x=4. the variation constant of k= the equation of variation is y=

my answer=?

20. If the sides of a square are lengthened by 8cm, the area becomes 144cm^2. Find the length of a side of the original square

my answer= ?

21. what does it mean to refer to a 20in tv set or a 25in tv set? Such units refer to the diagonal of the screen. a 30in tv set has a width of 24in. what is the height?

my answer=?

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