Thursday

July 24, 2014

July 24, 2014

Posted by **George** on Wednesday, May 2, 2007 at 9:36pm.

(x-2)(2x-1)

how do you figure that out?

trinomials like that can usually be done intuitively, but you should have been taught a method that you can use for general cases.

Look at the first term of 2x^2 and think where that can come from?

(x...)(2x...) is the only possibility.

Now look at the last term of +2

your brackets must have ended with +1 and +2 or -1 and -2

but surely they had to be both negative since the middle term is negative.

so now your choices are

(x-1()2x-2) or (x-2)(2x-1)

mentally expand them, only one gives you the correct middle term of the original.

So there is no way to incorporate the middle term from the beginning, like when there is no number in front of the x^2? And the only way to do it is keep guessing and checking?

**Related Questions**

Math - Can somebody please explain to me how to factor trinomials that contain ...

Factoring Trinomials - Working on how to factor trinomials, and the method that ...

Algebra 1 - The architect must factor several trinomials the are of the form x2...

MATH STUCK:-( - I am having some difficulties factoring polynomials and I use ...

algebra2 - Solve each of the following quadratic equations. can some explain how...

Math - I have 4 math problems that need to be solved by using factoring. I am ...

Factoring Polynomials - The book says: Find three different values that complete...

math - How do you factor out perfect square trinomials?

Simplifying Rational Expressions - 1.4x12 / 4x 2.d+7 / d^2-49 3.t^2-25 / t^2+t-...

Math - Hi, I have to do a project on the Shell Method in my Geometry class. I ...