CP - Lesson: Solve Quadratic Equations (Pt 1)

Presentation

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Mathematics

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9th Grade

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Practice Problem

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Easy

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CCSS

HSA-REI.B.4B, 6.EE.A.4

Standards-aligned

Christopher Gassler

Used 6+ times

FREE Resource

6 Slides • 8 Questions

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Solving Quadratic Equations (Part 1)

Objective: Solve quadratic equations.

Open Ended

If 5 × A × B = 0, what can you say about A or B?

Type response here

Zero Product Property

If ab = 0, then either a = 0 or b = 0 or both.

3 × 🔲 = 0

-2x = 0

So what number goes in the box?

So x = ?

abc = 0

So...

FACTOR

a number or quantity that when multiplied with another produces a number or expression.
Basically the "THINGS" being multiplied.

EXAMPLES

5y

3x(x - 5)

(x - 4)(x + 9)

the FACTORS are

Match

How many FACTORS are in each expression?

5x(x + 9)

(x + 2)(x - 8)

4xyz

Apply the Zero Product Property

A product of factors is zero if and only if one or more of the factors is zero.

-2x = 0

x =

(x - 4)(x + 6) = 0

x =

Multiple Select

What are the solutions to: (x + 4)(x - 11) = 0

-4

-11

-44

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Options (4)

(x + 3)(x - 7) = 0

(x - 3)(x + 7) = 0

(x + 3)(x + 7) = 0

(x - 3)(x - 7) = 0

Organize these equations with their solutions.

x = -3 or 7

x = 3 or -7

x = -3 or -7

x = 3 or 7

EXAMPLE

x² - 6x - 16 = 0

Solve:

Multiple Select

Solve: x² + 4x - 12 = 0

-6

-2

-4

EXAMPLE

x² - 4x = 21

Solve:

Multiple Select

Solve: x² + 3x = 10

-5

-2

-7

Fill in the Blanks

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