Question

4. Factorise
0) 12xpower2-7x+1
0 6xpower2+Sx-6
$. Factorise:
02-2r-x+2
a ) +13 +32r+ 20
2 +7+3
(v) 3- 4
-
- -
-y-
2
​

Answer 1

(i)12x^2-7x+1

12x^2-4x-3x+1

4x(3x-1)-1(3x-1)

(3x-1)(4x-1)

x=1/3 or x=1/4

(ii)6x^2+5x-6

6x^2+9x-4x-6

3x(2x+3)-2(2x+3)

(3x-2)(2x+3)

x=2/3 or x=-3/2