The document discusses quadratic equations and functions. It provides the ABC formula for solving quadratic equations of the form ax^2 + bx + c = 0, where a cannot equal 0. Examples are given of using the formula to solve equations such as x^2 + 9x + 20 = 0, 3x^2 - 9 = 0, and 6x^2 - 3x = 2x - 1 by assigning values to a, b, and c. The document ends by providing post-test questions asking to use the ABC formula to solve the equations x^2 + 6x - 24 = 0 and 2x^2 = 1.

1. Persamaan dan Fungsi
Kuadrat
_Rumus ABC_
X.4
Agusrini Khairunnida

2. ABC formula
If ax2 + bx + c = 0
with a 0 so :

3. Solusi atau penyelesaian
persamaan kuadrat
ax2 + bx + c = 0, yaitu :
or

4. Example …
x2 + 9x + 20 = 0
Answer :
a=1; b=9 ; c=20
atau

5. Example …
3x2 – 9 = 0
Answer :
a=3; b=0 ; c= – 9

6. Example …
6x2 – 3x = 2x – 1
Answer :
6x2 – 5x + 1 = 0 ; a=6; b=-5
; c= 1

8. Please join your group …

9. Let’s check your answer …

10. Post Test …
Use the ABC formula to assign
the roots of square equation of
the following :
1. x2 + 6x – 24 = 0
2. 2x2 = 1