(13) 2x2-x-6=(x-2)(2x+3)
1
2
X
-2-
-4
3-> 3
2
-6
-1
(15) 42 +8t+3=(2t+1)(2t+3)
2
2
1 →2.
3
4
3
8
68
(14) 2x2+xy-6y2=(x+2y) (2x-3y)
1
X-39
2y->>
4y
3y
-3y
-6y2
y
2
2
(16) 10x223x+12=(2x-3)(5x-4)
10
250
-3
→-15
<-4 →
-8
12
-23
(17) 12x2-x-6=(3x+2)(4x-3) (18) 6x2+13xy+6y2=(2x+3y)(3x+2y)
3
2-
8
4
3.
→ -9
12
-6
-1
2
3x
3y
2y
-
9y
4y
CO
6
6y²
13y