Box Method Quadratics

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Identify the error:

• found the wrong factors of ac (-18)

• factors did not add to b (7)

• first term and last term entered incorrectly in the box

• Factored out the GCF in each column and row incorrectly

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What is the product of (3x - 4y)(2x² - 3xy + 4y²)

• Use box method (2 by 3) or

  distributive property

• Combine like terms and arrange in standard form

Tags

multiply polynomials

What is the first step to factor x² + 13x + 12 ?

• Draw the box method

• Find numbers that multiply to 13 and add to 12

• Find numbers that multiply to 12 and add to 13

• Use the Zero Product Property to find the solutions

What is the second step (after drawing the box method) to factor x² + 13x + 12 ?

• Put x² in the top left box and 12 in the lower right box

• Find numbers that multiply to 13 and add to 12

• Find numbers that multiply to 12 and add to 13

• Use the Zero Product Property to find the solutions

What is wrong about this factoring of

x² + 13x + 12 ?

• the 10x and 3x add to 13x

• the 12 doesn't match the 10 and 3 on the outside

• there is nothing wrong here

What is correct about this factoring of

x² + 13x + 12 ?

• the 10x and 3x add to 13x

• the 12 matches the 10 and 3 on the outside

• there is nothing correct here

Type the missing number.

Type the missing number.