Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 110328: Is there anyone that can help me with this problem? I have worked almost the entire thing but am comfused toward the end.
1. Find all values of K such that f(x)is divisible bt the given linear poly.
f(x) k^2x^3-4kx+3; x-1
This is what I did:
f(1)= k^2(1)^3-4k(1)+3
f(1)= k^2-4k+3
(k+1)(k-4)
THis factoring isn't working. I have made a mistake somewhere but I can;t tell where. Please help.
Thanks

Click here to see answer by stanbon(75887)

Question 110345: Solve by factoring
X^2+8x-20=0
Click here to see answer by MathLover1(20849)

Question 110344: I do not understand how I am suppose to solve this.
Solve by using the Square Root Property
(x-5)^2=7
Click here to see answer by MathLover1(20849)

Question 110344: I do not understand how I am suppose to solve this.
Solve by using the Square Root Property
(x-5)^2=7
Click here to see answer by josmiceli(19441)

Question 110343: I need help with this question.

The length of a rectangle is 4cm more that 2 times its width. If the area of the rectangle is 61cm^2, find the dimensions of the rectangle to the nearest thousandth.
Click here to see answer by MathLover1(20849)

Question 110341: I would appreciate any help with this problem.
Solve by completing the square
4x^2+2x-3=0
Click here to see answer by josmiceli(19441)

Question 110340: Can anyone help me with this?

5x^2+3x+5=0
Click here to see answer by scott8148(6628)

Question 110340: Can anyone help me with this?

5x^2+3x+5=0
Click here to see answer by jim_thompson5910(35256)

Question 110339: I could really use help on this question.
x^2+x-2=0
Click here to see answer by scott8148(6628)

Question 110339: I could really use help on this question.
x^2+x-2=0
Click here to see answer by jim_thompson5910(35256)

Question 110342: Find the x-intercepts
y=x^2-4x+4
Click here to see answer by MathLover1(20849)

Question 110342: Find the x-intercepts
y=x^2-4x+4
Click here to see answer by jim_thompson5910(35256)

Question 110403: Solve by factoring.
x^2+8x-20=0
Click here to see answer by edjones(8007)

Question 110399: Find the axis of symmetry
y=x^2+7x+10
Click here to see answer by edjones(8007)

Question 110397: x^2-7x+10=0
Click here to see answer by edjones(8007)

Question 110446: I am trying to graph a quadratic equation....everything was going fine until I tried to get the points for the left side of the graph....they're all over the place...some go below the vertex and it definatly doesnt look like a parabola. Can someone please explain to me how to get the -points? I tried plugging x into the equation but its not working at all...neither are the x and y intercepts, which I have as y=-4 and x=4 and -1, I'm getting so frustrated. The equation is X�+3x-4
I appreciate anyones help!
Bonnie C.
Click here to see answer by checkley71(8403)

Question 110467: Determine if this equation can be expressed in quadratic form and if so write the equation in quadratic form. x^4+4x-5=0
Click here to see answer by stanbon(75887)

Question 110469: Determine if this equation can be expressed in quadratic form and if so write the equation in quadratic form. x^4+4x^2 -5=0
Click here to see answer by stanbon(75887)

Question 110550: Please help me solve this problem: 2(y-1)squared=ysquared
Click here to see answer by wgunther(43)

Question 110557: Determine whether the function f(x) = -x^2-2x-7 has a maximum or minimum value and find the coordinates of the point.
Click here to see answer by HyperBrain(694)

Question 110475: Determine if this equation can be expressed in quadratic form and if so write the equation in quadratic form. (x-3)^2 -4(x-3)-21=0
Click here to see answer by ankor@dixie-net.com(22740)

Question 110704: Write the equation of the line with x-intercept (�8, 0) and undefined slope.
Click here to see answer by solver91311(24713)

Question 110709: Write the equation of the line passing through (�5, �6) and (5, �6).
Click here to see answer by solver91311(24713)

Question 110695: Graph each function. First find the Vertex and Axis of Symmetry:
1. f(x)=-x^2+x-1
2. g(x)=2x^2+4x-1
3. y=x^2+10x+25
thank you
Click here to see answer by stanbon(75887)

Question 110771: Can you help with this problem? It's a take home exercise that has me stumped:
Solve: 2x2 (2x squared) = 7x + 11
I incorrectly listed this under "Word Problems." Thank you.

Click here to see answer by jim_thompson5910(35256)

Question 110772: Can you help? This take home exercise has me stumped:
Write the quadratic equation, given the solution: (3/5, 2/7)
Thank you.

Click here to see answer by edjones(8007)

Question 110773: Can you help?
Given the function: f(x) = -3(x + 2)2 (squared), find the vertex, axis of symmetry, and determine whether the f(x) has a minimum or maximum point.
Thank you.
Click here to see answer by edjones(8007)

Question 110479: Factor each equation to determine if it contains a quadratic factor. If so, write the the factored form of the equation. x^5 -4x^4 -12x^3=0
Click here to see answer by ankor@dixie-net.com(22740)

Question 110554: if the problem iz (x-1)(2x+6)-2xsquared would the constant term be -2 or -6??
if what would the linear term be for the function (3x-5)(2x-3) -19x 15xsquared or 6xsquared
Click here to see answer by edjones(8007)

Question 110872: Please help with this problem:
Find all zeros of f: f(x) = 3x^2 + 5x - 2
I believe you use the quadratic formula to solve or do I need to factor?
Click here to see answer by jim_thompson5910(35256)

Question 110875: Where is the answer for question 33638 and for question 110358? I looked but only saw the question, not the explanations.
Thanks.
Click here to see answer by bucky(2189)

Question 110887: Solve the following by factoring:3x^2 - 6x = 0

Click here to see answer by MathLover1(20849)

Question 110889: Y=x^2-2x+4 how do i find the x-intercept?
Click here to see answer by jim_thompson5910(35256)

Question 110997: How do I solve this 2y^2-y=6 quadratic equation using the Quadratic Formula.
Click here to see answer by jim_thompson5910(35256)

Question 111036: The Height in feet of a baseball above ground is given by h(t)=-16t^2+32t+3 where t represents the time in seconds after the baseball is thrown.
If you throw the ball into the air, how many seconds have passed until the ball hits the ground??

I really don't understand how to put this problem in the equations it's supposed to go into and I don't understand how to solve them...help!
Click here to see answer by scott8148(6628)

Question 111028: Calculate the value of the discriminant of x^2 + x + 3 = 0 By examining the sign of the discriminant in the previous equation, how many x-intercepts would the graph of y = x^2 +x + 3 have? why?
Click here to see answer by stanbon(75887)

Question 111052: Please help! Solve the following exponential equation:
26 over(/)1-2e^6x = 50
I tried multiplying the denominator on the left & right, and dividing by the 50 to get this far: 26/50 = 1-2e^6x
I tried subtracting the one and multiplying the -2, but I wound up with Ln48/50 = 6x. My answers to that are wrong. What am I missing? How do you do this problem if I'm wrong?
Click here to see answer by scott8148(6628)

Question 111126: Can some one help me with a real life example of a quadratic function with two values of x while finding the corresponding y for both? thanks
Click here to see answer by swerner7(1)

Question 111184: how do i graph?
1) y=4(x-6)(x-4)

2) y=3(x+4)(x+3)
3) y=3(x+5)(x=4)
4) y+4(x-4)(x-2)
5) y=4(x-7)(x-5)

Click here to see answer by MathLover1(20849)

Question 111206: Ok this is my 4th and final question of the day. you guys are awesome to spend your time helping non math minded people like myself:)
solve the equation:
x+6/3=x+6/x
Click here to see answer by solver91311(24713)

Question 111205: Ok here is my 3rd question for the day.
Solve the equation:
x^2-225=0
do i add 225 to both sides to start out?
Thanks so much!!
Click here to see answer by solver91311(24713)

Question 111186: Hello,
In the proof of the quadractic equation, you begin by dividing both parts by "a".
ax2 (2 is the square)+ bx + c = 0
(divide both sides by a)
x2(2 is the square) + b/a.x + c/a = 0
(then suddenly)
x2(2 is the square) 2.(b/2.a).x = c/a = 0
Then all of a sudden, a "2" appears. Where did that come from?
Thank you for your help.
Barbara
Click here to see answer by Earlsdon(6294)

Question 111200: I need some help on quatratic equations. The first question is:
The discriminant of the quadratic equation -2x^2+8x+5?
Thank you in advance for your help!!!
Click here to see answer by solver91311(24713)

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