Factoring Techniques for 9-4A Problems

The video tutorial covers solving quadratic equations by factoring, emphasizing the zero product property. It begins with an introduction to the method, followed by detailed examples demonstrating how to factor and solve quadratic equations. The tutorial explains the process of setting equations to zero, factoring trinomials, and using the AC method for more complex equations. Each example is broken down step-by-step, showing how to find solutions by setting factors to zero and verifying them. The video concludes with a reminder of the importance of mastering factoring techniques.

What is the Zero Product Property?

• A property stating if the product of two numbers is zero, at least one of the numbers must be zero

• A property that allows division by zero

• A method to add two products to get zero

• A rule for subtracting two numbers to get zero

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CCSS.HSA-REI.B.4B

What is the first step in solving a quadratic equation by factoring?

• Add the constant term to both sides

• Set the equation equal to zero

• Multiply both sides by the leading coefficient

• Divide each term by the coefficient of x^2

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CCSS.HSA-REI.B.4B

What values of x solve the equation when factored as (x + 3)(x + 5) = 0?

• x = -3, x = 5

• x = 3, x = -5

• x = 3, x = 5

• x = -3, x = -5

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CCSS.HSA-REI.B.4B

How do you verify a solution to a factored quadratic equation?

• By dividing each side of the equation by x

• By substituting the solution back into the original equation

• By adding the solution to each side of the equation

• By factoring the equation again

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What must be true for a quadratic equation to be solved by factoring?

• The equation must equal one

• The equation must equal zero

• The leading coefficient must be one

• The equation must be in standard form

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What are the solutions to the equation x^2 - 7x + 10 = 0?

• x = -2, x = -5

• x = -7, x = 10

• x = 2, x = 5

• x = 7, x = -10

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CCSS.HSA-REI.B.4B

What is the AC method in the context of solving quadratic equations?

• A technique involving the multiplication of the coefficients of x^2 and the constant term

• A method to add and then compare coefficients

• A process to divide the coefficient of x by the coefficient of x^2

• A strategy to subtract the coefficient of x from the constant

After applying the AC method and factoring by grouping, what should you do next?

• Multiply the factors

• Combine like terms

• Divide each term by the leading coefficient

• Set each factor equal to zero and solve for x

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What are the solutions to the equation 2x^2 + 7x + 3 = 0 after applying the AC method?

• x = 3, x = -1/2

• x = -3, x = -1/2

• x = 3, x = 1/2

• x = -3, x = 1/2

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Why is it preferred to have the leading coefficient as a positive number when solving quadratic equations?

• It makes the equation easier to factor

• To avoid dealing with negative square roots

• To ensure the solutions are positive

• To simplify the equation

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