Algebra

posted by .

Factor:

3x^2 - 27

3x^2-27=0
27+(3x^2-27)=0+27
3x^2=27
(3x^2)/3=27/3
x^2=9
x=3



Since there is 3x^2, one term must contain 3x and the other x. 27 factors into 3*3*3 or 3*9. With this information, you should be able to factor it yourself.

I hope this helps. Thanks for asking.

  • Algebra -

    X/4+x/5=27

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra

    Find the LCD for the given rational expressions, and convert each rational expression into an equivalent rational expression with the LCD as the denominator. 3 5 ----, ---- 84a 63b 4b 6 -----, ---- 75a 105ab Can someone here help me …
  2. Factor completely

    I am to factor this completely and I am stuck. 2r^3 + 8r^2 +6r Note: x^2 is x-squared (that is, x with the superscript 2), etc. 2 is a factor and r is a factor so the equation becomes 2r(r^2 + 4r + 3) then we can factor the term in …
  3. algebra 2

    Factor completely with respect to the integers. 1. 9x^2 - 4 2. x^3 + 64 3. 200x^2 - 50 4. 8x^3 - 64 5. x^3 + x^2 + x + 1 6. x^3 - 2x^2 + 4x - 8 7. 2x^3 + 4x^2 + 4x + 8 8. 2x^3 + 3x^2 -32x - 48 9. 7x^3 + 14x^2 + 7x 10. 6x^3 - 18x^2 …
  4. algebra

    Find the factors ab+ 2a +3b +6 First group the terms to get (ab+2a) + (3b+6) Now you can find a factor for each term a(b+2) + 3(b+2) Factor out the (b+2) in each term (b+2)(a+3)
  5. Math

    1.3x^2+17x+10 2.5y^8-125 3.a^2-2ab-15b^2 *Please help me.You have to factor by completing. Let's look at #1: 3x^2 + 17x + 10 We have 2 and 5 as factors of the last term. What combinations can we do to arrive at the middle term?
  6. math,algebra

    Can someone explain this to me plese: to factor a number you.... and then can you explain to me To factor an algebraic expression into prime factors means..... thanks This is how I would complete these two sentences. To factor a number, …
  7. algebra2

    Solve each of the following quadratic equations. can some explain how to do these kinds of problems 4x^2=13x+12 i believe if i am understanding this i am supose to add to where i get =0 4x^2-13x+12=0 now what do i need to do I am thinking …
  8. Algebra II

    Factor out: 1-125b^3 5b -1 is one of the factors. (Consider that an informed guess). Divide that into 1-125b^3 for the other (binomial) factor.
  9. Algebra II

    One factor of f(x) = x^3 + x^2 -22x - 40 is x + 4. Find the other factors. I got confused on my work but I ended up with x - 6 and x + 1 as the remaining factors
  10. Math

    You are about to factor a quadratic equation involving some x_'s, some x'x and a plain number. You see that the sign in front of the x's is negative, and the sign in front of the plain number is positive. This tells you that when you …

More Similar Questions