Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 338745: I don't get this one at all. Solve using the zero product property. 2x^4-16x=0
When I tried to solve it, I could get the zero and two answers but they also showed an answer with a number +- square root and I must be doing something wrong because I am not coming up with it. Any help in the right direction would be greatly appreciated. Thanks.
Click here to see answer by stanbon(75887)

Question 338326: Solve
2y(y+8)=7(y+8)
Find smaller and larger value
Click here to see answer by jim_thompson5910(35256)

Question 338980: I am trying to work out this problem as we speak, but I don't know how to figure out the solution part of the problem. Can someone help me out with tis by showing me the correct steps of working this out. Thanks in advance.
2x^2-2x-1=0
Click here to see answer by jim_thompson5910(35256)

Question 338993: Hello, I have a question for you.
A rectangular garden is 10ft longer than it is wide. Its area is 6375 ft^2. What are its dimensions?

Its width equals _____________ feet and its length equals___________ feet.
Click here to see answer by jim_thompson5910(35256)

Question 339009: x^2-6x+13=0
Click here to see answer by jim_thompson5910(35256)

Question 338989: The velocity of a train is reduced uniformly from 15m/sec. to 7m/sec. while traveling a distance of 80m. Assuming that the train maintains this constant acceleration, how much farther will the train travel before coming to a rest?
In this question im very confused about the 15m/sec. to 7m/sec. but overall dont know how to do this problem.
Click here to see answer by josmiceli(19441)

Question 339033: If k >0 and 25x^2 + bx + 16 = (5x - k)^2 , for all values of x, what is the value of k � b?
(a) -44 (b) -36 (c) 14 (d) 36 (e) 44

Click here to see answer by galactus(183)

Question 339048: If x = 2 is one solution of x^2 + 8x - c = 0, then the other solution is�
(A)20 (B) 10 (C) - 2 (D) - 10 (E) - 20
Click here to see answer by stanbon(75887)

Question 338999: I've heard that tossing a coin into a fountain will bring me good luck, so I throw a silver dollar up with a velocity of 5m/sec. and it falls into the fountain 1.3 meters below my hand. How long is the coin in the air?
In this question i just really dont understand how to do quadratic equations when you dont have the acceleration unless its -9.8m/s squared, but really not sure.
Click here to see answer by nerdybill(7384)

Question 339131: factor out the lowest common factor,
y^8 -16y^5
I have to factor out the LCF but is there a common factor, i don't think there is one? If there is one, help!
Click here to see answer by Alan3354(69443)

Question 339132: (y-7)(4y +12)(y +13)=0
y-7 4y+12 y+13= 0
what do i do next, i'm having a tough time with trinomials?
Click here to see answer by Earlsdon(6294)

Question 339163: Michael is involved in such a violent hit that it sends his helmet straight up into the air with a speed of 2m/sec. What is the maximum height his helmet reaches?
In this question I really dont understand what other things you know in this question besides the 2m/sec.?
Click here to see answer by jim_thompson5910(35256)

Question 339084: Model with a quadratic equation. Then solve.
A rectangular flower garden is twice as long as it is wide. It has a brick walkway 2 ft wide around it. The area of the flower arden and walkway is 336 ft ^2. find the dimensions of the flower garden.
Please help!
Click here to see answer by scott8148(6628)

Question 339176: HELP ME PLEASE !!! got following question havent got a clue !! " The distance across the diagonal of a square field is 50m shorter than going around the perimeter. Set up the relavent quadratic equation and use it to find the length of the side of the field to the nearest metre.
Click here to see answer by Alan3354(69443)

Question 339068: separate 65 into two parts so that the square of the smaller is 455 less than the square of the larger. what is the answer?
Click here to see answer by ankor@dixie-net.com(22740)

Question 339264: � What are the necessary and sufficient conditions for inequalities to represent an area in the first quadrant?
Click here to see answer by stanbon(75887)

Question 339268: � When solving a linear inequality, do you always need to solve for y? Why or why not?
Click here to see answer by stanbon(75887)

Question 338991: The acceleration of gravity at the surface of MArs is -3.7m/s squared. what is the initial velocity of a stone thrown upward by Marvin and reaches a height of 19 meter?
This question might relate to the quadratic equation but I really just feel like im just missing one part of this question to solve it, please help.
Click here to see answer by nyc_function(2741)

Question 339353: It is desired to draw off a part of 10 gallons of 30% solution of alcohol and to replace it by pure alcohol so as to produce a 50% solution. How many gallons should be drawn off.
Click here to see answer by stanbon(75887)

Question 339380: If 9x^2 - y^2 = 0 then what is the positive value of the x/y ?
Click here to see answer by nerdybill(7384)

Question 339349: x^3+x^2-20x=0 (this will come under cubic equation)"thank you"
Click here to see answer by nerdybill(7384)

Question 339408: What does the graph f(x+1) look like? Is it shifted to the right or to the left
Click here to see answer by stanbon(75887)

Question 339705: 3x^2-8x=3600
Click here to see answer by nyc_function(2741)

Question 339794: I am having a difficult time with this problem. Could someone please help me?
If f(x)=5x/3-4, then f(12)=
Thank you.
Click here to see answer by Fombitz(32388)

Question 339045: If 9x^2 - y^2 = 0 then what is the positive value of x/y ?
Click here to see answer by Fombitz(32388)

Question 339129: factor out the lowest common factor,
k^2(k-10)-7(k-10)
Click here to see answer by Fombitz(32388)

Question 339456: how would you solve

(1.90E-2)=(x^2)/(.295-x)
Click here to see answer by Fombitz(32388)

Question 339135: one leg of a right triangle is 6cm shorter that the other leg, The length of the hypotenuse is 30cm. Find the length of the longer leg?
Click here to see answer by Fombitz(32388)

Question 339134: five step problem solving process,
A rectangular walkway is 18ft longer that it is wide. If the area of the walkway is 88sq ft. Find the length and the width.
18^2 + 88= I'm not sure if i'm going in the right direction, help!
Click here to see answer by Fombitz(32388)

Question 339905: If (2x � 2)(2 � x) = 0, what are all the possible values of x?
A. 0 only B. 1 only C. 2 only D. 1 and 2 only E. 0, 1, and 2
Click here to see answer by jim_thompson5910(35256)

Question 339164: ax^2+bx+c=0 using -10 and 6
Click here to see answer by Fombitz(32388)

Question 340006: How do you know if a quadratic equation will have one, two, or no solutions? How do you find a quadratic equation if you are only given the solution? Is it possible to have different quadratic equations with the same solution? Explain. Provide your classmate�s with one or two solutions with which they must create a quadratic equation.
Click here to see answer by solver91311(24713)

Question 340003: please help me solve this problem; Write the quadratic equation in general form.
16 � 2(x + 6)2 = 0 I got -2x2+24x+56=0
by 16-2(x2+12x+36)=0
16-2x2+24x+72=0
-16 -16
-2x2+24+56=0 so i don't understand why it is wrong.could you please help me. thank you.
Click here to see answer by edjones(8007)

Question 340045: what is x
3x+2(4x-1)-9=0
Click here to see answer by rfer(16322)

Question 340042: What adds to give you '+90' and multiplies to give you '-7200'?
Click here to see answer by Edwin McCravy(20054)

Question 340338: Hi,
What is y = x^2 + 4x - 1
find the x-intercepts
Thanks!
Click here to see answer by nerdybill(7384)

Question 340339: Hi,
I need help with:
Evaluate the discriminant b^2 - 4ac. Then use the answer to state how many real-number solutions exist for the equation: y = x^2 + 8x + 16
Thanks!
Click here to see answer by nerdybill(7384)

Question 340336: Hi,
What is h = 16t^2 + vt + s
solve for t
Thanks!
Click here to see answer by stanbon(75887)

Question 340334: Hi,
What is 4/(m^2-7) = 1 ?
Thanks.
Click here to see answer by Fombitz(32388)

Question 340182: Please help me find the x and y intercept for a circle,and if you can the center point and radius:

Click here to see answer by Fombitz(32388)

Question 340331: Hi,
What is X^2 + sqrt 22x = 0
Thanks.
Click here to see answer by Fombitz(32388)

Question 340480: HOW DO I CREATE AN EQUATION to graph a parabola for a dish thats 300 feet in diameter and has a maximum depth of 38 feet?
Click here to see answer by galactus(183)

Question 340712: Find the zeros (or roots)
express complex numbers in terms of i
Click here to see answer by Edwin McCravy(20054)

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