Question

Factorise:
(5) 6x3 - 23x2 + 29x – 12
(6) 6x3 + 7x2 – 14x – 15
( 7 ) 8x3– 26x2 + 13x + 5
(8) 12x3 + 17x2 + 3x – 2

Write also Its identity​

Answer 1

Answer:

6x3 - 23x2 + 29x – 12

18-46+29x-12=0

-46+18-12=-29x

-29x=-40

x=40/29

6x3 - 23x2 + 29x – 12

18-46+29x-12

40=-29x

x=-29/40

8x3– 26x2 + 13x + 5

24-52+13x+5=0

13x=-23

x=-23/13

12x3 + 17x2 + 3x – 2

36+34+3x=2

70+3x=2

3x=-70+2

x=68/3