# Questions on Algebra: Quadratic Equation answered by real tutors!

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 Quadratics: solvers Practice! Answers archive Lessons Word Problems In Depth

 Question 11: Solve the equation x^2=x+2 by graphing y=x^2 and y=x+2 Click here to see answer by ichudov(499)

 Question 15: How do I find the parabola of y=3x^2+4x-5 Click here to see answer by AnlytcPhil(1277)

 Question 22: This is a basic question but I can seem to explain it. The Quadratic Equation term "b^2 -4ab" why do we change it to "b^2+ 4ab" when the "b" value is negative? Thanks annmrj@aol.com EX: b^2-4ab (x^2-6x-27=0) = 6^2+4(1)(-27)=144 Click here to see answer by AnlytcPhil(1277)

 Question 23: what are the roots if in ractored form it is y=(2x-3)(3x+4)? what is the axis of symmetry? Click here to see answer by AnlytcPhil(1277)

 Question 24: How do you find A and B in the equation when directed to "Solve by using the Quadratic Equation."? Click here to see answer by ichudov(499)

 Question 26: Is there a way to explain the Quadratic Formula in laymans terms??? I am going to teach Elem. Ed, and is there a simpler way to explain it to my students??? Also, is there any proofs for why factoring works?? I've searched and searched, and I cannot find any proofs. Click here to see answer by ichudov(499)

 Question 27: It has been years since I have had an algebra class. I cannot remember how to solve this problem. Thank You! Click here to see answer by ichudov(499)

 Question 43: how do i write the quadratic equation used to find the time when the rocket reaches 80 ft. if y=55+33t-5t^2 where y is the height and t is the tim ethe rocket has been in the air? Click here to see answer by ichudov(499)

 Question 56: How would you set up the following word problem: You are hitting baseballs. When tossing the ball into the air, your hand is 5 feet above the ground. You hit the ball when it falls back to a height of 4 ft. If you toss the ball with an initial velocity of 25ft/sec, how much time will pass before you hit the ball? Thanks! Click here to see answer by AnlytcPhil(1277)

 Question 68: A field bordering a straight stream is to be inclosed. The side bordering the stream is not to be fenced. If 1000yards of fencing material is to be used, what are the dimensions of the largest rectangle field that can be fenced What is the maximum area? Click here to see answer by mhapich(1)

 Question 70: A baseball is hit by a batter. The function s(t) = -16t to the second power + 140t + 3 models the ball's height above the ground, s(t) in feet t seconds after it was hit. How long will it take for the ball to strike the ground? Round to the nearest tenth of a second. Click here to see answer by ichudov(499)

 Question 85: The graph of a quadratic function can have 0, 1, or 2 x-intercepts. How can you predict the number of such intercepts without drawing the graph or completely solving the equation? Click here to see answer by ichudov(499)

 Question 86: Is it possible for a quadratic function to have one real zero and one imaginary zero? Why? Coul you give me an example? Click here to see answer by ichudov(499)

 Question 136: In america, the term quadratic is generally used in situations with four (4) terms or subjects. Why in quadratic equations is there only and x^2 (a) when it would seem logical to have it to the fourth power (x^4)? Click here to see answer by ichudov(499)

 Question 147: Why is it sufficient to define a quadratic function, in terms of a, b, and c? Click here to see answer by ichudov(499)

 Question 189: Could you give me a real life example of when I would use the Quadratic Eguation? Click here to see answer by ichudov(499)

 Question 198: why are there usually two solutions in quadratic equations? Click here to see answer by ichudov(499)

 Question 99: The base of a triangle is five feet longer than the height. The area of the triangle is 75 square feet. Find the height and base of the triangle. Click here to see answer by ichudov(499)

 Question 93: The position of an object moving in a straight line is given by s(t)=t^2-8t, where s is in the feet and t is the time in seconds the object has been in motion. How long will it take the object to move 11ft. Click here to see answer by wynona(4)

 Question 152: two consecutive integers are added the square of their sum is 361, what are the integers? Click here to see answer by terrtwo(10)

 Question 101: How do I state the axis of symmetry for Click here to see answer by wynona(4)

 Question 266: the difference between two numbers is 15. four times the smaller number plus twice the larger number is 120. what are the two numbers? Click here to see answer by whenindoubt(13)

 Question 265: What is a real life example where a quadratic equation would be used? Click here to see answer by ichudov(499)

 Question 262: how would the graph look with the equation as y >= x2+6x+9 >= (greater than or equal to) please help soon!!!! Click here to see answer by ichudov(499)

 Question 289: Find two consecutive odd integers such that the square of the first, added to 3 times the second, is 24. Click here to see answer by arden42(16)

 Question 295: what is the answers to this eqaution Im not sure if i have the right answer 3 −  5/2 x − 3x²   =   0 Click here to see answer by AnlytcPhil(1277)

 Question 288: The sum of the squares of two consecutive integers is 41. Find the integers Click here to see answer by ichudov(499)

 Question 173: how do I find a parabola that passes through the points: (2,-3),(-2,9), and (1,3/2)? Click here to see answer by AnlytcPhil(1277)

 Question 335: How do I factorise and ? Click here to see answer by ichudov(499)

 Question 316: I need help solving the quadratic word problem: Find three consecutive even integers such that the square of the sum of the smaller two is equal to twice the largest. so far I... let x = the first integer, x+2 = the second integer, x+4 = the third integer. Selina Click here to see answer by GreyWolf79(3)

 Question 524: How do I factor 6x^2-7x-4? Click here to see answer by AnlytcPhil(1277)

 Question 549: What is the highest or lowest point of a parabola called? Click here to see answer by citychic3(8)
 Question 549: What is the highest or lowest point of a parabola called? Click here to see answer by prabhjyot(164)

 Question 544: A baseball is popped straight up with an initial velocity of 32 feet per second, then its height above the ground is a function of time given by s(t)=-16t^2+32t . Graph this function for 0 less than or equal t less than or equal 2 . What is the maximum height reached by this baseball? Click here to see answer by citychic3(8)

 Question 554: what does a mean in the equation ax^2 + bx+c? answer as soon as you can Click here to see answer by askme(9)

 Question 541: In this equation 2x square=32 is the correct answer for the vertex -8,96 or is it -4,4 Click here to see answer by askme(9)

 Question 620: I need help on this equation please 2x² + 5x - 3 = 0 Click here to see answer by AnlytcPhil(1277)

 Question 631: Factor Click here to see answer by lordacro(12)

 Question 667: 2nSquared-7n-3=0 I dont know how to do this and I need help..So please help. Click here to see answer by janinecb(25)

 Question 654: How do I factor 6y^2+7y-25? Thanks, Sue Click here to see answer by janinecb(25)

 Question 589: Could you help me out? f(x)=(x)(x)+5 Click here to see answer by janinecb(25)

 Question 591: Will you please help me with the following problem? Put the following quadratic in standard form, identify the vertex, y-intercept, and graph including two symmetrical points to the left and right of the vertex. Click here to see answer by janinecb(25)

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