Solving Quadratics by Factoring: Day 1 Insights

In this video, Mrs. Ruccio introduces solving quadratic equations by factoring. She explains the concepts of solutions, roots, and zeros, emphasizing their equivalence. The video covers algebraic methods to find these solutions, using examples to demonstrate factoring techniques such as trinomials and the greatest common factor (GCF). The video also highlights the importance of understanding x-intercepts and provides practical tips for using graphing calculators to find zeros.

What are the x-intercepts of a quadratic equation also known as?

• Coefficients

• Solutions, roots, or zeros

• Variables

• Constants

How can zeros be found using a graphing calculator?

• Menu > Tools > Solve

• Menu > Graph Settings > Zeros

• Menu > Analyze Graph > Find Zeros

• Menu > Calculate > Derivatives

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CCSS.HSF-IF.C.7C

Why is it important to write solutions as x equals a number?

• To identify the x-intercepts

• To prepare for graphing

• To simplify the equation

• All of the above

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CCSS.8.EE.C.7B

What method is not mentioned as a factoring method in the video?

• Difference of two squares

• GCF

• Trinomials

• Sum of two cubes

When solving a quadratic equation algebraically, what value is substituted for y?

• 1

• The coefficient of x

• -1

• 0

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CCSS.HSA-REI.B.4B

Which pair of numbers both add up to 5 and multiply to -14?

• 7 and -2

• 14 and -1

• -7 and 2

• 7 and 2

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CCSS.HSA-REI.B.4B

What is the solution set for the equation 0 = x^2 + 5x - 14?

• x = -7, x = 2

• x = 7, x = -2

• x = -7, x = -2

• x = 7, x = 2

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CCSS.HSA-REI.B.4B

What does GCF stand for?

• Greatest Common Factor

• Geometric Coefficient Function

• General Calculation Formula

• Graphical Component Feature

How is the GCF used in solving quadratic equations?

• By subtracting the GCF from each term

• By adding the GCF to each term

• By multiplying each term by the GCF

• By dividing each term by the GCF

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CCSS.HSA-REI.B.4B

What is the solution when factoring out the GCF in the equation 0 = x(x + 5)?

• x = 1, x = -5

• x = 5, x = -5

• x = 0, x = 5

• x = 0, x = -5

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CCSS.HSA-REI.B.4B