Tuesday

November 25, 2014

November 25, 2014

Posted by **Autumn** on Thursday, May 15, 2008 at 10:01pm.

Example:

x²-2x=8

- algebra -
**Quidditch**, Thursday, May 15, 2008 at 10:21pmX^2 -2X = 8

In "set to zero" form:

X^2 - 2X - 8 = 0

factoring:

(X + ?) * (X + ?) = 0

The two different numbers that are question marks must equal 8 when multiplying them together. This would suggest trying:

1, 8

or 2, 4

Since 8 is negative, one of the values must be negative.

The first factor is:

(X - 4)

So...

(X - 4) * (X + ?)

You can get the second factor easily from that.

**Answer this Question**

**Related Questions**

Math - 2x(x+3) = 0 Is there a way to solve that using the below methods? ...

MATH - HOW DO I SOLVE A QUADRATIC EQUATION BY FACTORING? Do you have a specific ...

Algebra - Choose 1 set of points from the choices below. Then, solve the problem...

algebra - Write the equation in quadratic form and solve it by factoring. x2(8x...

Algebra - I was asked to use factoring and the zero-product property to solve ...

math - determine the equation of the line in y=mx+b form that passes through 1...

Chemistry - I had to find the absolute zero from a graph with the following ...

A Math Equation...Plz Help... - |2x + 4| is always larger than or equal to zero...

Math - Part 1: When writing linear equations, how do you determine which form of...

Alg 1 - Factoring to solve quadratic equations: Use the Zero-Product Property to...