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100

THE QUADRATIC FORMULA


100

THE AC METHOD


100

WHAT DO WE USE QUADRATIC FORMULAS FOR?

To find the solutions of a quadratic equation.

200

IDENTIFY a, b and c IN THE EQUATION:

"2X2 + X - 6 = 0"

a= 2

b= 1

c= -6

200

IDENTIFY a, b and c IN THE EQUATION:

"6n2 - 5n + 1= 0 "

a= 6

b= -5

c= 1

200

IDENTIFY a, b and c IN THE EQUATION:

"2x2 - 15x + 25 = 0 "

a= 2

b= -15

c= 25

300

USE THE QUADRATIC METHOD TO SOLVE THE QUADRATIC EQUATION "x2 + 10x + 21= 0"

x=-3 or x= -7

300

USE THE QUADRATIC FORMULA TO SOLVE THE QUADRATIC EQUATION "3n2 - 5n - 8 = 0"

n= 8/3 or n= -1

300

USE THE QUADRATIC FORMULA TO SOLVE THE QUADRATIC EQUATION "4n2 + 19n + 12= 0"

n=-3/4 or n=-4

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