posted by .

I am trying to figure out the zeroes of 2x^2-7x-30. I did this graphically in a way that matched up with the answers in my book, however, I couldn't get it by distributing. I tried (2x+-10)(x+3) but that didn't get -7x in the middle as logic told me it should. How would you then do this?

  • Algebra -

    2x^2-7x-30 = (2x +5)(x - 6)

  • Algebra -

    ask for help

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra

    Find the zeroes of each function. State the multiplicity of multiple zeroes. y=(x+3)^3 y=x(x-1)^3 I know you're supposed to factor them out, but I'm really not sure how to. Thanks. The equations are already factored out. For the first …
  2. Algebra

    I've been trying to figure out this equation for over an hour but all the answers I get are wrong. The equation is 0.9=-10I^2+6I . The answer is supposed to be 0.3 and it does work out, but I have tried all different ways to solve …
  3. Algebra II

    I cannot figure out how to work this one. I have tried working it like the example in the book but cannot come up with one of the answers given. Please help. Use log5(2)=0.4307 and log5(3)=0.6826 to approximate the value of log5=54. …
  4. Survey of Calculus (Algebra too)

    For the supply equations, where X is the quantity supplied in units of a thousand and P is the unit price in dollars, (A.)- sketch the supply curve and (B.)- determine the price at which the supplier will make 2000 units of the commodity …
  5. Algebra

    I'm trying to solve x^3-3x^2-x+3 is less than zero. Except, I'm not sure how to factor it. I tried splitting it so that 3 would be a factor for 3x^2 and 3, so the result was 3(-x^2+1), and x^2 was a factor for x^3 and -3x^2, resulting …
  6. Algebra

    I distributed 3x^2+x-10=f(x) to find the zeroes. My book's answer was (3x-5)(x+2). When I distributed this to make sure I got the original function, I got 3x^2-x-10. Is this still an acceptable way to factor it even though the x is …
  7. Algebra

    Hi! Today I was absent from my algebra class, and they learned how to recognize and factor the difference of two squares.. I've tried to figure it out from the book, but it's not making any sense... Can someone help?
  8. Algebra

    45 รท 6t x 11x I have already posted this question and received an answer. However, brackets weren't used and so still seeking understanding. I was trying to divide 6 into 45 then multiply 11x, but it isn't working out as the book …
  9. algebra

    Can someone please explain these problems to me I have tried and cannot figure them out. 1)Use synthetic division to find p(-3) for p(x)=x^4-2x^3-4x+4 2)Find all the zeroes of the equation x^4-6x^2-7x-6=0
  10. Algebra 1A

    Thanks Reiny,that is my only problem trying to figure out the equation. I just cannot figure out for some reason when getting the intersection, I tried several different ways yet my progress is still the same.

More Similar Questions