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

Tutors Answer Your Questions about Radicals (FREE)

Question 78915: I can't seem to come up with the correct way to answer the problem C = √3c-8

c=(√3C-8) the numbers in parentheses is all under the square root sign
Click here to see answer by bucky(2189)

Question 78895: can you please help me find the distance between (-5,6) and (4,-6)
Click here to see answer by mathdoc314(58)

Question 78884: Hey, I was wondering you you solve radical equations such as this.
3 to the square root of 2x+3 = the square root of x-7
And also, what is a exponential decay?
Click here to see answer by mathdoc314(58)

Question 78919: a+b=a+b for every value of a and b?
Click here to see answer by funmath(2925)

Question 78896: please help me simplify this problem?
sqrt/sqrt
Click here to see answer by tutor_paul(490)

Question 78893: The base of a ladder is 3 feet away from the wall.The top of the ladder is 9 feet from the floor. Find the length of the ladder to the nearest thousandth.
help me please?
Click here to see answer by tutor_paul(490)

Question 78891: can someone help me to simplify this?
sqrt(8sqrt-2sqrt)
Click here to see answer by tutor_paul(490)

Question 78889: will someone check this for me please?
sqrt+6=0
sqrt=-6
(sqrt3x+9}}})^2=(-6)^2
3x+9=36
3x=27
x=27
Click here to see answer by tutor_paul(490)

Question 78933: The section is adding/subtracting radicals. My problem is subtracting.
The equation is: The sqaure root of 120 - The square root of 270 - The square root of 300. Can you help me?
Click here to see answer by stanbon(57219)

Question 78886: square root of y+10-(minus) square root of y-2 =2
Click here to see answer by tutor_paul(490)

Question 78885: will someone help me find the distance between (2,0) and (-5,0)for some reason i think i know the answer but i can't do the problem in my head i get 7 as the answer but i can't solve it on paper help me please?
Click here to see answer by Earlsdon(6287)

Question 78878: can someone help me evaluate if possible please?
-^3sqrt
Click here to see answer by Earlsdon(6287)

Question 78945: I need to simplify the cube root of -60 over the cube root of 120. I think it is the negative of the cube root of 4 over 2, but I am not certain.
Click here to see answer by Edwin McCravy(8879)

Question 78946: I need to rationalize the denominator of 5 over (7- radical 14). I get 1+ (radical 14 over 7). Is this the same as (7 + radical 14) over 7? Since 7/7 is 1, it should be equivalent.
Click here to see answer by mathdoc314(58)

Question 79034: Add 3c^2 + 7c + 1 and 10c^2 – 8c – 4.
Click here to see answer by checkley75(3666)

Question 79035: Factor completely.
b^2 – ab – 6a^2
I got this answer this time is it right?
(b – 6a)(b + a)

Click here to see answer by stanbon(57219)

Question 79026: can i please get help with this problem?
evaluate if possible sqrt

Click here to see answer by checkley75(3666)

Question 79041: can you help me simplify?
sqrt=
Click here to see answer by checkley75(3666)

Question 79041: can you help me simplify?
sqrt=
Click here to see answer by stanbon(57219)

Question 79039: can someone please help me simplify this?
2sqrt+4sqrt
Click here to see answer by checkley75(3666)

Question 79027: will someone pleas check this for me?
sqrt
=sqrt/sqrt
=3/4
Click here to see answer by checkley75(3666)

Question 79038: can some one check this for me please?
sqrt=5
sqrt=5
(sqrt)^2=52
y+2=25
y=23
Click here to see answer by jim_thompson5910(28476)

Question 79040: help me please i am able to do + but not -
sqrt=x-3
Click here to see answer by jim_thompson5910(28476)

Question 79040: help me please i am able to do + but not -
sqrt=x-3
Click here to see answer by stanbon(57219)

Question 79025: can some one check this for me please?
i have a triangle and i have to answer in simplified radical form.
20cm is on the left 15 cm is on the bottom and x is on the right.
x^2+15cm^2=10cm^2
=x^2+225cm=100cm
x^2=125
x=125
x=5sqrt
Click here to see answer by stanbon(57219)

Question 79043: Remove the parentheses and simplify. 9y – (–4y – 2x)
Click here to see answer by Earlsdon(6287)

Question 79030: can someone please check this for me?
(2xsqrt)(3sqrt)
=(2xsqrt)(3sqrt
=6xsqrt
Click here to see answer by Earlsdon(6287)

Question 79067: I have a word problem i have done it over and over but it will not match my a b c and d answer can you help me?
the base of a ladder is 3 feet away from the wall. The top of the ladder is 9 feet from the floor. Find the length of the ladder to the nearest thousandth. i get this as you can see i am in another place help please
a^2=9^2+3^2
a^2=81+9
a^2=90
a=sqrt90
a=3sqrt10
a=2sqrt5
but my choices are;
A 9.487 feet
B 7.355 feet
c 11.788 feet
D 8.466 feet
Click here to see answer by rapaljer(4667)

Question 79032: sqrt=sqrt/sqrt
Click here to see answer by rapaljer(4667)

Question 79031: Write in descending-exponent form, and give the degree.
7x^3 – 6x^4 – x^6 – 4

Click here to see answer by rapaljer(4667)

Question 79033: Divide.
x^2 – 11x + 24/ x - 8

Click here to see answer by funmath(2925)

Question 79087: can someone please help me to simplify?
8sqrt-sqrt
Click here to see answer by checkley75(3666)

Question 79106: I need to solve for w and find the solution set for the following: Sqrt (5w-1) = w-3. I multiplied both sides by sqrt (5w-1) and got (5w-1) = w-3(sqrt (5w-1).
Click here to see answer by Earlsdon(6287)

Question 79098: c.
is this correct
simplify: √80 minus √5
my answer: 3√5

Click here to see answer by Earlsdon(6287)

Question 79105: I need the solution set for the following equation; (3t/(t+3)) + 4 = (2/(t+3))
Click here to see answer by checkley75(3666)

Question 79094: c..

how can i factor this completely
x^4+x^2-12
Problem #2
how can i convert
-2.25 into a fraction?

Problem #3
is this correct?
simlify
1 + (2)/(3) divided by 2+ (1)/(2)
My answer: (2)/(3)

Click here to see answer by jim_thompson5910(28476)

Question 79112: can some one help me simplify?
(10+sqrt)(10-sqrt)
Click here to see answer by checkley75(3666)

Question 79111: can comeone check this for me please?
21+sqrt/3
=7+sqrt
Click here to see answer by josmiceli(9649)

Question 79118: x+2 = cube root(12x+8)
thanks is advance
Click here to see answer by ankor@dixie-net.com(15624)

Question 79119: how do i decide all values of b in the following equations that will give one or more real number solutions? If an equation has solution how do i write a rule for judging by looking at it in standard form?
a. 3x^2+bx-3=0
b. 5x^2+bx+1=0
c. -3x^2+bx-3=0
Click here to see answer by stanbon(57219)

Question 79083: can someone tell me if i simplified this right?
21+sqrt/3
=7+sqrt
Click here to see answer by ptaylor(2048)

Question 79189: Can anyone help me to simplify by combining like terms:
sqrt63 - 2sqrt28 + 5sqrt7
I appreciate any help with this radical expression.
sean32485
Click here to see answer by ankor@dixie-net.com(15624)

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