2x power 3-x power2-4x+3          pl give me factorisation of this equation

Asked by toy.jeet | 22nd Sep, 2014, 09:39: PM

Expert Answer:

C o n s i d e r space t h e space g i v e n space p o l y n o m i a l comma f open parentheses x close parentheses equals 2 x cubed minus x squared minus 4 x plus 3 f open parentheses 1 close parentheses equals 2 open parentheses 1 close parentheses cubed minus 1 squared minus 4 open parentheses 1 close parentheses plus 3 equals 2 minus 1 minus 4 plus 3 equals 0 B y space t r i a l space a n d space e r r o r space m e t h o d comma space 1 space i s space t h e space r o o t space o f space t h e space a b o v e space e q u a t i o n. T h u s comma space d i v i d e space 2 x cubed minus x squared minus 4 x plus 3 space b y space x minus 1 space t o space g e t space 2 x squared plus x minus 3 A g a i n space f a c t o r i n g space 2 x squared plus x minus 3 : 2 x squared plus x minus 3 equals 2 x squared minus 2 x plus 3 x minus 3 equals 2 x open parentheses x minus 1 close parentheses plus 3 open parentheses x minus 1 close parentheses equals open parentheses 2 x plus 3 close parentheses open parentheses x minus 1 close parentheses T h u s comma space 2 x cubed minus x squared minus 4 x plus 3 equals open parentheses 2 x plus 3 close parentheses open parentheses x minus 1 close parentheses open parentheses x minus 1 close parentheses

Answered by Vimala Ramamurthy | 23rd Sep, 2014, 09:32: AM