Tutors Answer Your Questions about Radicals (FREE)
Question 74560: decide all values of b in the following equations that will give one or more real number solutions.
a) 3x^2 + bx - 3 = 0
b) 5x^2 + bx + 1 = 0
c) -3x^2 + bx - 3 = 0
d) Write a rule for judging if an equation has solutions by looking at it in standard form.
I do not understand how can find these solutions.
Please show work
Click here to see answer by josmiceli(9676)   |
Question 74931: can someone correct them for me thanks....ahead....
Use Property 1 to simplify each of the following radical expressions. Assume that all variables represent positive real numbers.
Problem #2
radical(50)
My answer: 5radical(2)
Problem#24
radical (72x^3)
MY answer:
6xradical(2x)
Problem #36
Use Property 2 to simplify each of the following radical expressions.
radical ((10)/(49))
My answer:
(radical (10))/(7)
Click here to see answer by funmath(2925) |
Question 75144: I have to do a project on radicals and square roots. Part of our extremely confusing assignment is to show our radical "disguised" as an imaginary number, both simplified and unsimplified. I have looked up imaginary numbers and though I understand the definition (sort of) I don't understand at ALL how this translates to my radical. My radical is [the square root of] 6875. Would you please help me?
Click here to see answer by checkley75(3666) |
Question 75178: I am so confused by this problem that I do not even know where to start, could someone please help me, equations involving radicals are new to me and I have a test Friday.
Perform the indicated operations:
3 squared [48] + 7 squared [12] - squared symbol [75]
where the words "squared and squared symbol" are written there is a checkmark looking symbol. Hopefully someone understands this.
S. Milliron
Click here to see answer by stanbon(57342) |
Question 75143: I am getting confused on this algebra problem. The directions are to simplify the radical and to assume that all variables represent positive real numbers.
I think I got the wrong answer when I tried to work it.
3 is the index of the radical and underneath the radical is 54a to the 5th power, c to the 7th power, and e to the 9th power.
Thanks for the help
Click here to see answer by ankor@dixie-net.com(15650)  |
Question 75612: Please help!!! I am having an extremely difficult time solving these square root problems. Whatever assistance anyone can provide will be greatly appreciated. Thank you in advance.
PG. 530 Combine, if possible.
(6.) √5 - √6 + 3√5 - 2√6
(8.) √7 - √63
PG. 535 Multiply. Be sure to simplify any radicals in your answer.
(26.) (3√5 + √3) (√5 + √3)
(36.) (3√2 + 5)^2
PG. 542 Simplify. Be sure to rationalize all denominators.
(6.) √5 / √80
(14.) 6 / √17
Click here to see answer by stanbon(57342) |
Question 75599: I need help please....
Problem #6
Is this correct
Directions: Evaluate if possible
√-121
my answer: -11i
Problem #32
Directions: Simplify by combining like terms.
√63-2√28+5√7
this symbol "√" means radical
Problem # 48
Use the properties for radicals to simplify each of the following expressions. Assume that all variables represent positive real numbers.
√(12x^3)/(5)
it reads as radical and the radicand it has a fraction 12x^3 over 5
Click here to see answer by psbhowmick(529)  |
Question 75931: I really need help with these:
1) (-64)^4 is undefined, correct?
2) (7x)^3 * (2y)^3
3) - (5/8)^3 = - 5^3/2, correct?
4) 3 * (-3125)^5 = 15, right?
5) (8*x^5*z^8)^ 1/2
6) 5 * 6^1/2 + 2 * 10^1/2
and (3^4)^1/8 = 1/9, correct?
Thank you very much for your help in adavance!
Thanks, Vicky
Click here to see answer by scott8148(6628)  |
Question 75931: I really need help with these:
1) (-64)^4 is undefined, correct?
2) (7x)^3 * (2y)^3
3) - (5/8)^3 = - 5^3/2, correct?
4) 3 * (-3125)^5 = 15, right?
5) (8*x^5*z^8)^ 1/2
6) 5 * 6^1/2 + 2 * 10^1/2
and (3^4)^1/8 = 1/9, correct?
Thank you very much for your help in adavance!
Thanks, Vicky
Click here to see answer by stanbon(57342) |
Question 75897: Ok so this is an algebra 2 question, but i couldnt find anything about roots in the algebra 2 section so i figured i would ask it here. I am not exactly sure how to type a square root on a computer so substiture the divisiont mark (/) as a square root symbol, but here goes:
/-6 x /-15 when i asked my teacher she told me to start out by changing it to:
i/6 x i/15 but i am stumped after this part. Sorry if my question is somewhat confusing because i cant type a square root but thx for this wonderful site and all your help i would probably be failing if it wasnt for you guys.
Click here to see answer by Cintchr(481) |
Question 75994: wk...6ex
Problem #8
Solve:
radical (y+16) = 1
Problem #9
Find the length x in the trianlge. Express your answer in simplified radical form.
Hight 20cm
Legnth 15cm
Hypotenuse x
Problem #10
Find the distance between (-7,7) and (2,-5)
Click here to see answer by funmath(2925) |
Question 76523: A problem that is not in the book - can you help me solve? Thanks
A right triangle is a triangle with one angle measuring 90°. In a right triangle, the lengths of the sides are related by the Pythagorean Theorem, , where c is the length of the hypotenuse (the side opposite the 90° angle). Find the length of the hypotenuse when the other two sides’ measurements are 6 feet and 8 feet.
Answer:
Show work in this space .
Click here to see answer by checkley75(3666) |
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