2. PRIMING ACTIVITY
DEPARTMENT OF EDUCATION
An ANAGRAM is a type of word play, the result
of rearranging the letters of a word or phrase to
produce a new word or phrase, using all the
original letters exactly once.
Example CARTHORSE can be rearranged into
ORCHESTRA.
28. 1. How did you find the product?
2. In finding each product, what mathematics
concepts or principles did you apply?
Explain how you applied these mathematics
concepts or principles?
3. How would you describe the products
obtained?
4. Are the products polynomials? If YES, what
common characteristics do these
polynomials have?
29.
30. 1. How do you describe Linear
equation?
2. How are these equations different
from those which are linear?
3. What common characteristics do
these equations have?
32. Extracting Square Roots
Quadratic equations that can be written in the form x2 = k ca
be solve by applying the following properties:
1.) If k > 0, then x2 = k has two real solutions or roots: x =
± k2.) If k = 0, then x2 = k has one real solutions or root: x
= 03.) If k < 0, then x2 = k has no real solutions or
roots:
Examples:
x2 – 16 = 0
x2 = 16
x = ± 16
x = ± 4
x2 + 10 =
10
x2 = 10 –
10
x2 = 0
x2 + 9 = 0
x2 = –9
no real
roots
33. Factoring
How do you factor the following?:
1.) x2 + 8x –
9
x x
Factors of – 9
9 ; -1
-9 ; 1
Sum of
factors8
-8
+
9
– 1
OR x2
-9-x
9x
x 9
x
-1
( x + 9 ) ( x – 1 )
-3 ;
3
0
34. 2.) 3x2 – x –
10
– 30x2
-
30x2
=
factors Sum of
factors-30x ; x
30x ; -x
-15x ; 2x
15x ; -2x
-6x ; 5x
6x ; -5x
-29x
29x
-13x
13x
-x
x
3x2 – 6x + 5x –
10
(3x2 – 6x) + (5x –
10)
3x(x – 2) + 5(x –
2)
O
R
3x
2
-105x
-6x
x -2
3x
5