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

Tutors Answer Your Questions about Radicals (FREE)

Question 441085:
For this problem I got this far...
x^2(x^2-43)+450=0
How would you factor this? Help me!
Click here to see answer by ankor@dixie-net.com(15667)

Question 441197: How do you simplify (64x^4/5 all over 27y^3/2) ^-1/3
Click here to see answer by Gogonati(809)

Question 441237: wat si the formula to make a chart for this quadratic equation y=x2+4x=6
Click here to see answer by ewatrrr(10682)

Question 441462: simplify the following
i^266
Click here to see answer by stanbon(57424)

Question 442101: How do i find the value of n if the distance between the points at (7,5) and (-3, n) is the square root of 136?
Click here to see answer by josmiceli(9698)

Question 442311: solve square root of 2x=-4 and also square root of x+222-square root of x+46=8
Click here to see answer by swincher4391(726)

Question 442422: 4 sq rt 6/sq rt30 simplfy by rationalizing the denominator
Click here to see answer by Gogonati(809)

Question 442552: squre root of p^2-3p+64=p+5
Click here to see answer by swincher4391(726)

Question 442594: Simplify the expression
4,096^1/6
Click here to see answer by swincher4391(726)

Question 442595: Simplify the radical
sqrt (3/64)
Click here to see answer by swincher4391(726)

Question 442592: change the radical to an exponential expression
sqrt (a^3-b^3)
Click here to see answer by swincher4391(726)

Question 442591: Find the distance between P and Q, given the coordinates below
P (-16,-5), Q(8,2)
Click here to see answer by richard1234(5390)

Question 442611: Find all x that will make f(x)=0
f(x)=7x^2-2x-4
Click here to see answer by MathLover1(6649)

Question 442620: Use factoring to solve the equation
6x^2 + 23x - 18 = 0
I know the choices are
x=2/3, -2/9
x=3/2, -2/23
x=2/3, -23/2
x=3/2, -9/2
x=2/3, -9/2
Can someone please show me how to work this problem? Thanks
Click here to see answer by stanbon(57424)

Question 442624: Write the expression without using negative exponents. Assume that all variables represent positive numbers
(16/2,401y^4)^-3/4
options are
343y^3/8
8/343y^3
8/343y^2
343y^5/8
Can someone please show me how to work this problem?

Click here to see answer by stanbon(57424)

Question 442651: The dimensions of a flag are in the ration 1 to 1.9 (width greater than height). If 80 square feet of cloth are used to make the flag, estimate its width to the nearest 1/4 foot.
Click here to see answer by jorel1380(2518)

Question 442662: x2-2x-4=0 What is the simpliest radical form?

Click here to see answer by swincher4391(726)

Question 442664: x2-3x=5 What is the simplest radical form?
Click here to see answer by swincher4391(726)

Question 442665: Find the coordinates of the vertex of the graph of the equation. If necessary, complete the square on x to write the equation in the form y=a(x-h)^2 + k. Do not graph the equation
y= (x-5)^2 + 3
I know the choices are
(-5,-3)
(3,-5)
(-3,5)
(3,5)
(5,3)
can someone pleas show me how to work this problem?
Thanks
Click here to see answer by swincher4391(726)

Question 442635: A delivery service will not accept a package for shipping if any dimension of the package exceeds 21 inches. An archaeologist wants to ship a 36-inch femur bone. Will the bone fit in a box 4-inches tall that has a 21-inch square base?
yes or no
Please explain this equation to me
Click here to see answer by rfer(12678)

Question 442642: Perform the operation. do not use negative exponents in the answer. assume that all variables represent positive numbers
(a^5/2 - b^5/2)^2

Click here to see answer by robertb(4012)

Question 442645: Rationalize the denominator. The variable represents a positive number
6x/ sqrt (x+3)

Click here to see answer by robertb(4012)

Question 442705: X^x sqrt(x)={x sqrt(x)}^x
Click here to see answer by swincher4391(726)

Question 442598: Simplify and combine like radicals
sqrt (200) - sqrt (50)
Click here to see answer by robertb(4012)

Question 442760: Solve the equation for B

options are
(Y+3)^6 x Q
(Y+3)^1/6 x Q
(Y-3)^6 x Q
(Y-3)^1/6 x Q
x = multiply
and the 6 in the problem is the small number before the square....not multiplied by it.
Can someone pleas show me how to work this problem! Thanks

Click here to see answer by rwm(914)

Question 442759: Perform the multiplication and simplify, if possible
9 sqrt(3) (8 sqrt (5) + 6 sqrt (7))
options are
54 sqrt (15) + 72 sqrt (21)
72 sqrt (15) + 54 sqrt (21)
54 sqrt (3) + 72 sqrt (7)
72 sqrt (3) + 54 sqrt (7)
72 sqrt (5) + 54 sqrt (7)
Can someone pleas show me how to work this problem.
Thanks
Click here to see answer by Alan3354(30993)

Question 442757: solve
sqrt(6x-5)-7=0
Click here to see answer by nerdybill(6963)

Question 442774: Graph the function
f(x)= -2x^2 + 4x + 1

Click here to see answer by ewatrrr(10682)

Question 442812: sqrt(2u+10)-2 sqrt(u)=0
Click here to see answer by kittycat1613(12)

Question 442829: Simplify the rational expression:
(-x^2 + 10x -21)/(-3x^2 + 23x -14)
Click here to see answer by kittycat1613(12)

Question 442888: How to prove that,
√( 5 - 2√6 ) = √3 - √2
Click here to see answer by Alan3354(30993)

Question 442973: You drop a ball from a set of bleachers that is 64 feet above the ground. How long will it take the ball to hit the ground?

So far, I have done this...

But I don't know what to do next to complete the problem. Thanks in advance!
Click here to see answer by swincher4391(726)

Question 442971: A cat jumps off a chair 2ft off the ground with an initial velocity of 3ft/s. Use the formula below where t= time (in seconds), v= initial velocity, and h= initial height:

A) Write an equation that gives the height (in feet) of the cat as a function of time (in seconds) since it jumps.
~For this part, I have: ~

B) What is the height of the cat after 0.25 seconds?
~Did I do this right? I need help... ~

I'm not sure what to do after this part. Thank for your help in advance. :D
Click here to see answer by stanbon(57424)

Question 443366: simplify by taking roots of the numerator and the denominator.Assume all expressions under the radicals represent positive numbers.
cuberoot(64x^11/y^3)
Click here to see answer by ankor@dixie-net.com(15667)

Question 443517: solve.
(1/x)=(2/x)-(1/3)

Click here to see answer by Alan3354(30993)

Question 443681: I am having trouble with rationalizing denominators. Here is the question.
3sqrt2-5sqrt3/2sqrt3-3sqrt2
I get for the numerator 6sqrt6+9sqrt4-10sqrt9-15sqrt6 simplified to 6sqrt6+18-30-15sqrt6
for the denominator I get 4sqrt9 + 6sqrt6 - 6 sqrt6 - 9sqrt4 simplified to 4*3-9*2=-6
Where am I going wrong?
Click here to see answer by scott8148(6628)

Question 443755: evaluate 25 1/2. answer is 2 to the power 4 how do i get to to it?
Click here to see answer by rwm(914)

Question 443908: -2(radical) 1/2
I Don't Understand.
Click here to see answer by swincher4391(726)

Question 443978: My teacher has told me that it is impossible to find a domain for equations like:
sqrt(-1-2x)
sqrt(-2x-4)
I can't understand why the domain would not be (-∞, -½) and (-∞, -2). I was told that finding a domain was impossible because both elements in the equation were negative (-1 and -2x; -2x and -4). However, because x is an unknown and could be negative, I don't quite see how what I was told is possible. Is the variable x not considered when finding domains?
Click here to see answer by swincher4391(726)

Question 444215: How do I solve the square root of X +3 = 5
*sorry, my computer wont let me do the root sign but the sign should only be over x*
Click here to see answer by Leaf W.(97)

Question 444248: If a skid mark measures 470 ft, what was the speed of the car? Round the answer to the nearest whole number. Using the quation r=2squareroot5L
Click here to see answer by benni1013(197)

Question 444172: please help me solve 3 sqrt 7= sqrt -y
Click here to see answer by edjones(7569)

Question 444302: The squareroot of 3x-6=the squareroot of x+4
Click here to see answer by MathLover1(6649)

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