  Math Central - mathcentral.uregina.ca  Quandaries & Queries    Q & Q    Topic: trinomials   start over

4 items are filed under this topic.    Page1/1            Cubic polynomials 2007-08-14 From Jalon:The cubic function f(x) = (x+2)^3 touches the x axis only once at x = -2 (negative two). it could also be written as f(x) = (x+2)(x+2)(x+2) Investigate the cubic functions below as well as the one above and comment clearlt and fully on where they touch/intersect the x axis, and how these points relate to the given function. a) f(x) = (x  3)(x +4)(x  2) b) f(x) = x(x + 1)^2 (^2 = that means it squared) Your comments should reference graphs illustrating your conclusions and display another 2 trinomial graphs that demonstrate your conclusions. particular attention should be given to the number of times your function crosses or touches the X axis. i dont know how this works but could you send the answer to..... spongy_91@hotmail.comAnswered by Stephen La Rocque.     Expanding (x+2)(x+3) 2005-03-23 From Rick:The problem involves writing expressions, one in factored form and one in expanded form, for the area of a rectangle of sides x+2 and x+3. We've gotten as far as area = (x+2)(x+3). But I can't come up with the other expression.Answered by Penny Nom.     Factoring expressions 2004-01-03 From A student:I'm having trouble factoring expressions that aren't monic. I can do things like x2-9x+8, but problems like 12x2+5x-3 have me stumped. I also have a question about factoring out common factors. In a problem like x2-18x+81, wouldn't you divide by 9? But what happens to the x2, is it x2/9?Answered by Penny Nom.     Factoring trinomials that are squared 2000-04-17 From A student:I have a question that I really need an answer to. I need help with factoring trinomials that are squared.Answered by Penny Nom.      Page1/1    Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.    about math central :: site map :: links :: notre site français