Box Method for Factoring Factoring expressions in the form of.

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Presentation transcript:

Box Method for Factoring Factoring expressions in the form of

Box Method for Factoring We are going to factor the expression First draw a box and divide into quarters.

Box Method for Factoring Now we are going to place the terms of the expression into the box. Look at the expression: Place the in the top left box. Place the -2 in the bottom right box. -2

Box Method for Factoring Now we are going to multiply the coefficient of the first term by the constant. (15) (-2) =

Box Method for Factoring Now we are going to list the factors of Are there any pair of numbers that would equal -7?

Box Method for Factoring We just found the factors of -30 that have a sum of -7! We will place those factors in the box with an “x” It doesn’t matter which box you put them in x 3x

Box Method for Factoring Now we are going to pull out the common factors from each row and column. Last sign out of the box determines the sign. -2 3x -10x 1 5x 3x-2

Box Method for Factoring We now have the factors of The factors are: (5x + 1)(3x - 2)