Questions on Algebra: Radicals -- complicated equations involving roots answered by real tutors!

Tutors Answer Your Questions about Radicals (FREE)

Question 1053001: x^6 + 9x^3 + 8

Click here to see answer by Alan3354(69443)

Question 1053001: x^6 + 9x^3 + 8

Click here to see answer by ikleyn(52776)

Question 1053329: Solve for the following equation step by step and justify the steps when using an exponential property.
(7^(x))^(4) = (7^(2 )* 7^(3))/(7^(3x))

Click here to see answer by Theo(13342)

Question 1054210: How do I solve the square root 64m to the 2nd power? I have no idea.
Click here to see answer by Alan3354(69443)

Question 1054914: Factor by pulling out the Greatest Common Factor
24x^4y^3-16x^3y^5
Click here to see answer by Theo(13342)

Question 1055019: -[(7sqrt(133)+144)/(24sqrt(133)-42)]
Click here to see answer by Alan3354(69443)

Question 1055286: Find the distance between two points
(3,-9) and (-32,111)
Type and exact answer, using radicals as needed
Click here to see answer by Fombitz(32388)

Question 1055304: need help to simplify giving the exact answer including a radical. assume x>0.
(sqrt 75)-(sqrt 12) + (sqrt 48x^2)
Thanks for the help with this..
Click here to see answer by Fombitz(32388)

Question 1055319: The diagonal of a square had length of 10sqrt(2). Find the length of the side of the square
Click here to see answer by Alan3354(69443)

Question 1055405: Between which pair of consecutive integers does radical 111 lie
Click here to see answer by ikleyn(52776)

Question 1055316: At a height of h meters, you can see v kilometers to the horizon. These numbers are related by the formula v=3.5sqrt(h). How far can you see to the horizon through an airplane window ate a height or altitude of 20000m?
Click here to see answer by Fombitz(32388)

Question 1055321: At a temperature of t degree Fahrenheit, sound travels S feet per second, where S=21.9sqrt(5t+2457). During blasting for avalanche control in the mountains, sound traveled at a rate of 1110 ft/sec. what is the temperature
Click here to see answer by Fombitz(32388)

Question 1055909: Square root of 149 in step wise

Click here to see answer by Alan3354(69443)

Question 1057047: Find a polynomial equation with real coefficients that has
the roots of -5, 2+i
Click here to see answer by ikleyn(52776)

Question 1057047: Find a polynomial equation with real coefficients that has
the roots of -5, 2+i
Click here to see answer by Edwin McCravy(20054)

Question 1057276: There is a step missing from the solution below. Which equation is the missing step?
P=46-√0.042x+16
28=46-√0.042x+16
-18=-√0.042x+16
?
308=0.042x
7333=x
Click here to see answer by Fombitz(32388)

Question 1057371: Consider the equations:
f(x)=−5x−1f(x)=−5x−1 and g(x)=2x2g(x)=2x2
Select the solution for (f+g)(x)(f+g)(x) .
Click here to see answer by ikleyn(52776)

Question 1057663: Add or subtract as indicated. Assume that all variables represent positive real numbers. You will need to simplify terms to identify the like radicals.^3sqrt128 xy^3 + y^3 sqrt250x
Click here to see answer by ikleyn(52776)

Question 1057662: \frac{2-\sqrt{5}}{2+\sqrt{5}}
Click here to see answer by ikleyn(52776)

Question 1057834: E=IR for the variable I
Click here to see answer by solve_for_x(190)

Question 1057891: James estimated the total cost of groceries to be $50. The actual cost of the groceries is $65.
What is the percent error?
Round your answer to the nearest whole percent.
Enter your answer in the box.
Click here to see answer by solve_for_x(190)

Question 1057980: rationalize the denominator and simplify
2/Sqrt(x)+ 9
Click here to see answer by solve_for_x(190)

Question 1057982: rationalize the numerator and simplify
7-Sqrt(10)/2
Click here to see answer by ankor@dixie-net.com(22740)

Question 1057981: rationalize the numerator and simplify
7-Sqrt(10)/2
Click here to see answer by josgarithmetic(39616)

Question 1058181: x^2+8x+6/x^2-16
Click here to see answer by Boreal(15235)

Question 1058248: 4x^1/3 - 11 = 9
Click here to see answer by stanbon(75887)

Question 1058308: √27x� - x√48 + 2√75x�
Please help me! Thanks
Click here to see answer by ikleyn(52776)

Question 1058308: √27x� - x√48 + 2√75x�
Please help me! Thanks
Click here to see answer by MathTherapy(10551)

Question 1058454: Rationalize the denominator
(√ 7)/(√ 3+2)
I got as far as
(√ 7)/(√ 3+2) * (√ 3-2)/(√ 3-2)
[(√ 7)(√ 3+2)]/(√ 3)^2-(2)^2
[(√ 7)(√ 3+2)]/3+4
[(√ 7*√3)-(2√2)]/7
[(√21)-(2√2)]/7
My book is saying that the answer is (√21)-(2√2) Without a denominator. Did I do something wrong or is the book wrong (it's been wrong before).
Click here to see answer by Fombitz(32388)

Question 1058484: Rationalize the denominator
8/(√6 - 2)
I got as far as
8/(√6 - 2) * (√6 + 2)/(√6 + 2)
[8/(√6 - 2)]/(√6)^2 + (2)^2
[8/(√6 - 2)]/6+4
The book says the answer is 4√6 + 8
Click here to see answer by Cromlix(4381)

Question 1058504: Rationalize the denominator.
(3√10)/(2+√10)
I so far got...
(3√10)/(2+√10) * (2-√10)/(2-√10)
[(3√10)(2+√10)]/(2)^2+(√10)^2
[(6√10)-(3√100)]/4-10
Then I get stuck.
Click here to see answer by josgarithmetic(39616)

Question 1058508: The time T(x) (in seconds) for a pendulum to make one complete swing back and forth is approximated by
2π[(√x)/(√32)]
where x is the length of the pendulum in feet.
Determin the exact time required for one swing for a pendulum that is 1 ft long. Then approximate the time to the nearest hundredth of a second.
Click here to see answer by ikleyn(52776)

Question 1058493: Write the English phrase as an algebraic expression. Then simplify the expression.
The time T(x) (in seconds) for a pendulum to make one complete swing back and forth is approximated by
T(x)= 2π(√x/32)
where x is the length of the pendulum in feet.
Determine the exact time required for one swing for a pendulum that is 1 ft long. Then approximate the time to the nearest hundredth of a second.

Click here to see answer by ikleyn(52776)

Question 1058809: Cant solve this to save my life.
X-2square root of x-3 =3
Click here to see answer by stanbon(75887)

Question 1058809: Cant solve this to save my life.
X-2square root of x-3 =3
Click here to see answer by josgarithmetic(39616)

Question 1058809: Cant solve this to save my life.
X-2square root of x-3 =3
Click here to see answer by MathTherapy(10551)

Question 1059039: please help me solve this problem?
The area of a circle is 22 cm square. Find its radius to the nearest whole number.
Click here to see answer by Boreal(15235)

Question 1059158: Solve the equation by completing the
square. Simplify your solution(s) and write
imaginary solutions as a+bi.
𝑥� − 18𝑥 + 101 = 0
Click here to see answer by ikleyn(52776)

Question 1059159: f(x)=1/2x�-x-1/8
Click here to see answer by ikleyn(52776)

Question 1059160: The revenue from selling x radios is
𝑅(𝑥) = 90𝑥 − 𝑥�
. How many radios should
be sold to earn $1100 in revenue?

Click here to see answer by ikleyn(52776)

Question 1059404: Where does the 4 come from in
sqrt(3)+sqrt(3)/3
=4/3sqrt(3)
Click here to see answer by Fombitz(32388)

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