Quadratics

Presentation

•

Mathematics

•

9th Grade

•

Medium

•

CCSS

HSA-REI.B.4B, HSA.APR.C.4

Standards-aligned

Danielle B

Used 4+ times

FREE Resource

5 Slides • 6 Questions

Quadratics

Quadratics Equations

Graph it!
Plug in the entire thing in.
Solutions: look where it crosses the x-axis

Multiple Choice

Solve Using the Quadratic Formula

x² + 4x - 40 = -8

-10 & -4

-4 & 10

-8 & 4

8 & -4

Multiple Choice

What are the solutions for the equation 2x² + 16x = 18

x = -1 and x = 9

x = -9 and x = 1

x = 2 and x= 18

x = 2 and x = 16

Multiple Choice

Solve the equation using the quadratic formula.

4x² +9x = 12x

x = {0, 3/4}

x = {0, -3/4}

x = {0, 4/3}

no solution

Factoring

Graph the entire thing!
Find the solutions
Make the solutions into factors

Example: x=3

Switch the sign
(x-3)
NO equal signs!

Example: x=-2/5

Switch the sign
(x+2/5)
Slide the bottom!
(5x+2)

Multiple Choice

factor:x²- 25

( x + 5 ) ( x - 5 )

( x - 5 ) ( x - 5 )

( x + 5 ) ( x + 5 )

Prime

Multiple Choice

Factor completely:

3x² + 5x - 12

(3x + 4)(x-3)

(3x - 4)(x + 3)

(3x + 3)(x -4)

(3x - 3)(x + 4)

Multiple Choice

Factor

n² + 16n + 63

(n-7)(n+4)

(n+7)(n-9)

(n-3)(n-10)

(n+7)(n+9)

Quadratics

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