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

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

Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

Algebra: Radicals -- complicated equations involving roots

Solvers

Lessons

Problems, free tutors

Quiz

In Depth

Tutors Answer Your Questions about Radicals (FREE)

Question 78900: I need help on solving this, please and thanks!! =)

So far I have this:
I rid the equation of roots by squaring both sides-

Simplified-

Combined like terms-

Divided both sides by x-

Solved for x-

But, when I plug that in to the original equation it comes out to be-

What am I doing wrong?
Click here to see answer by jim_thompson5910(13788)

Question 78915This question is from textbook Study Guide and practice workbook
: 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 signThis question is from textbook Study Guide and practice workbook

Click here to see answer by bucky(1732)

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(2873)

Question 78896: please help me simplify this problem?
sqrt/sqrt
Click here to see answer by tutor_paul(424)

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(424)

Question 78891: can someone help me to simplify this?
sqrt(8sqrt-2sqrt)
Click here to see answer by tutor_paul(424)

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(424)

Question 78933This question is from textbook Algebra

: 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?This question is from textbook Algebra

Click here to see answer by stanbon(26273)

Question 78933This question is from textbook Algebra

Click here to see answer by tutor_paul(424)

Question 78886: square root of y+10-(minus) square root of y-2 =2
Click here to see answer by tutor_paul(424)

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(4900)

Question 78878: can someone help me evaluate if possible please?
-^3sqrt
Click here to see answer by Earlsdon(4900)

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(2922)

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(26273)

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(26273)

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(13788)

Question 79040: help me please i am able to do + but not -
sqrt=x-3
Click here to see answer by jim_thompson5910(13788)

Question 79040: help me please i am able to do + but not -
sqrt=x-3
Click here to see answer by stanbon(26273)

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(26273)

Question 79043: Remove the parentheses and simplify. 9y – (–4y – 2x)
Click here to see answer by Earlsdon(4900)

Question 79030: can someone please check this for me?
(2xsqrt)(3sqrt)
=(2xsqrt)(3sqrt
=6xsqrt
Click here to see answer by Earlsdon(4900)

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(3620)

Question 79032: sqrt=sqrt/sqrt
Click here to see answer by rapaljer(3620)

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(3620)

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

Click here to see answer by funmath(2873)

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(4900)

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

Click here to see answer by Earlsdon(4900)

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(13788)

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(3007)

Question 79118: x+2 = cube root(12x+8)
thanks is advance
Click here to see answer by ankor@dixie-net.com(6693)

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(26273)

Question 79083: can someone tell me if i simplified this right?
21+sqrt/3
=7+sqrt
Click here to see answer by ptaylor(1578)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915