Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 451701: Solve: SQRE ROOT x-5=x-5
I got the answer (5,6) but I don't know how
Please show me step by step to get the answer. thanks
Click here to see answer by Alan3354(30993)

Question 451707: Simplify as much as possible: SQRE ROOT 27+ 2 SQRE ROOT12 + SQRE ROOT 3
I got the answer 8 SQRE ROOTs 3 but I don't know how
Please show me step by step to get the answer. thanks
Click here to see answer by ewatrrr(10682)

Question 451697: Find equation of line passing through the point (5,-2) and (-3,4)
I got the answer y=(-3/4)x+7/4 but I don't know how
Please show me step by step to get the answer. thanks
Click here to see answer by nerdybill(6961)

Question 451698: Simplify and leave with positive exponents: (2wy^-3)^4 / 4y^-2
I got the answer 4w^4 / (y^10) but I don't know how
Please show me step by step to get the answer. thanks
Click here to see answer by ewatrrr(10682)

Question 451704: Divide: x^2+5x+7 / x+3
I got the answer x+2+ 1/x+3 but I don't know how
Please show me step by step to get the answer. thanks
Click here to see answer by MathLover1(6634)

Question 451700: Subtract and Simplify: 8/x^2-3x - 2x-4/x^2-9x+18
I got the answer -2x^2+12x-48 / x(x-3)(x-6) but I don't know how
Please show me step by step to get the answer. thanks
Click here to see answer by ewatrrr(10682)

Question 451729: Hi! This is a fairly simple question: how much can you simplify in this problem using i (square root of - 1): The original problem was Thanks
Click here to see answer by nerdybill(6961)

Question 451740: Solve by factoring and using principle of zero products:
n^2+11n+18=0

Click here to see answer by benn143(2)

Question 451740: Solve by factoring and using principle of zero products:
n^2+11n+18=0

Click here to see answer by ewatrrr(10682)

Question 451727: if a model rocket was measured by the vertical motion model h=-16t2+96t, how many seconds would it take for the model rocket to reach 80 feet for the second time?
My math teacher asked a similar vertical motion question and if i see this one worked out i might understand it better.
Click here to see answer by benn143(2)

Question 451746: f(x)=-8squared+8x+7
Click here to see answer by stanbon(57361)

Question 451746: f(x)=-8squared+8x+7
Click here to see answer by solver91311(16897)

Question 451870: the perimeter of a rectangle is 36 cm. the area is 80 cm squared. find the length and width.

i know the answers i just need how to get them. this is part of my area math packet. please help!
Click here to see answer by jorel1380(2518)

Question 451965: There are Four different methods of solving a quadratic equation; factoring, the square root property, completing the square, and the quadratic formula. Explain under what circumstances each method would be preferred over any of the other methods. Give an example for each circumstance.
Click here to see answer by richard1234(5390)

Question 451702: Multiply and Simplify (11x+30y^2)
I got the answer 121x^2+660xy+900y^2 but I don't know how
Please show me step by step to get the answer. thanks
Click here to see answer by richard1234(5390)

Question 451998: Hi. I need help with the equation below. I have no idea where to begin. This is the quadratic equations from India.

Click here to see answer by stanbon(57361)

Question 451993: Hi
I did this equation and got the following answers. Can you please explain what my answers mean?
Actual Graph of y = 12x2-146x+328
x = 9.19357626775359, 2.97309039891308
12x2-146x+328 = 12(x-9.19357626775359)(x-2.97309039891308)
Click here to see answer by stanbon(57361)

Question 452046: The line y=2x-k passes through the point (4,0)
work out the value of k
Click here to see answer by nerdybill(6961)

Question 452083: Please help me solve this equation: Faith and Charity are sister who share a room. Faith takes 45 mins to clean their room alone, while Charity takes an hour. How long would it take them to clean their room together?
Click here to see answer by solver91311(16897)

Question 452095: Evaluate each:
a) 2sin30/3cos45
b) (sin210 - 2sin(5pi/4)/ cos150
c) (sin(-pi/4)) / (2cos(-pi) - sec(pi/6))
d) (tan(pi/2) )/ (csc(pi/6))
e) tan3pi + cos(-pi/6)
f) (sin315)/(4cos210 + 3sin(-330)
PLEASE HELP (:
Click here to see answer by solver91311(16897)

Question 452115: Factor x^3-8
I got the answer (x-2)(x^2+2x+4) but i don't know how
Please show me step by steps to get the answer. Thanks
Click here to see answer by solver91311(16897)

Question 452114: Divide: x^2+5x+7 / x+3
I got the answer x+2 + 1/x+3 but i don't know how
Please show me step by steps to get the answer. Thanks
Click here to see answer by solver91311(16897)

Question 452113: Simplify and leave with positive exponents: (2wy^-3)^4 / 4y^-2
I got the answer 4w^4 / y^10 but i know how especially y^10
Please show me step by steps to get the answer. Thanks
Click here to see answer by stanbon(57361)

Question 452149: what is the y-coordinate of the y-intercept of y=-9x^2+5x-7
Click here to see answer by nerdybill(6961)

Question 452241: State whether the following equation represents a linear, quadratic or exponential function. y=x^0.2 I think Exponential but there is a multiple choice answer that says "none of these" so I am not %100 sure.
Click here to see answer by stanbon(57361)

Question 452304: X2 + 6X + 15 = 0
Show how this equation has no solution?
Click here to see answer by Alan3354(30993)

Question 452309: Please help me solve this problem!
Find the values of b and c in the following equation if the roots of the equation are {-6, -1}: x^2 + bx + c = 0
Click here to see answer by htmentor(789)

Question 452354: It says to use the Quadratic formula to solve each question.
How do I solve 3k^2+k=6? I'm stumped.
There is no number in front of the k like every other problem in the book.

Click here to see answer by ankor@dixie-net.com(15656)

Question 452318: Factor x^3-8
I got the answer (x-2)(x^+2x+4) but I don't know how
Please show me step by step to get the answer. Thanks
Click here to see answer by confusedgirl81(14)

Question 452709: Hello,
I'm just a little confused by what the following question is asking:
What two numbers are represented by each of the following?
1. -6 plus or minus (sqrt 6) I think it is asking for the answer of -6 + (sqrt 6) and -6 - (sqrt 6) since nothing can be factored out of (sqrt 6).
2. 4/3 plus or minus (i sqrt 2) /3 I think the answers would be (4+ (isqrt2))/3 and ((4 - (i sqrt 2))/3
but it could be 1 + ((1+isqrt2))/3 and 1 - ((1+isqrt2))/3
and the next question:
what must be added to make the given expression a trinomial square?
m^2 - 4m + ? I think the answer is 4, if the equation were factored it would be (m-2)(m-2)
a^2 + 12a + ? not sure how to do this equation however.

please show me how to correctly do these equations. Thank you
Click here to see answer by ilana(307)

Question 452977: It says to find the solutions to the quadratic equation x^2+12x+36=7. Would you suggest quadratic formula?
Click here to see answer by rwm(914)

Question 452932: hey i am studying for my final and i am stuck on the quadratic formula, i have looked mutible places and even my text book doesnt have it, dumb right? well i remember it was like X=-b+or - square root of something and then it is all divided by 2a, i missed the days in class we where working on this and ya, thanks i appreciate this :)
Click here to see answer by ankor@dixie-net.com(15656)

Question 453121: x^2+10x+25=8?
Click here to see answer by Sarpi(32)

Question 453487: Solve the equation by completing the square.
a. Write irrational numbers in simplest radical form.
b. Describe each step as you go.
X2 + 4x – 8 = 0
Solve the equation by using the quadratic formula. Use √( ) and ± , if you want.
a. Write irrational numbers in simplest radical form.
b. Explain each step as you go.
X2 + 4x – 8 = 0

Click here to see answer by stanbon(57361)

Question 453695: an art museum charges $10 for an adult admission. The museum estimates they will lose 15 adult visitors per day for each one dollar increase in price. If the museum averages 300 adult visitors a day, which is the most profitable adult admission price?
Click here to see answer by htmentor(789)

Question 453785: How do I write a quadratic equation using -6, and -4 as solutions.
Click here to see answer by algebrahouse.com(1079)

Question 454040: solve by the square root property 2(x+2)^2=16
Click here to see answer by MathLover1(6634)

Question 454047: Solve the inequality below. Enter your answer as an inequality, such as w > 2/3 or s < -4.
-9 < x - 7
Click here to see answer by stanbon(57361)

Question 454061: please help me with this problem....
12(x-4)-(x+2)=(x+2)(x-4)
solve for x using the quadratic formula.

Click here to see answer by rfer(12662)

Question 454084: Please help me with this problem.....
Give exact and approximate solutions to three decimal places.
(x-7)^2=81

Click here to see answer by MathLover1(6634)

Question 454097: Please help me with this problem? I have tried several solutions and keep getting stuck!
During the first part of a trip, a canoeist travels 53 miles at a certain speed. The canoeist travels 2 miles on the second part of the trip but 5mph slower. The total time for the trip is 4 hours. What was the speed on each part of the trip?
Click here to see answer by rwm(914)

Question 454123: How do I write a quadratic equation with -6,-4 as solutions?

Click here to see answer by solver91311(16897)

Question 454399: I need help solving this by graphing 5x-8y=40
8y-5x=-40 is this graph consistent or inconsistent?
Click here to see answer by mananth(12270)

Question 454469: A research study has shown that 500 people attend a tournament when the admission price is $2. In the championship game, the price will be considered for an increase: for every 20cent increase, 20 fewer people will attend. What price will maximize the revenue? What is the value of the maximum revenue?
Click here to see answer by htmentor(789)

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