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CBSE Class 9 Answered

Plzz solve this...
Asked by ahujarajesh11 | 25 Jun, 2015, 04:23: PM
answered-by-expert Expert Answer
l e t space f left parenthesis x right parenthesis space equals space x cubed minus 4 x squared plus 12 x plus 7 open parentheses x plus 1 half close parentheses rightwards double arrow x equals negative 1 half U sin g space R e m a i n d e r space T h e o r e m comma f open parentheses negative 1 half close parentheses equals open parentheses negative 1 half close parentheses cubed minus 4 open parentheses negative 1 half close parentheses squared plus 12 open parentheses negative 1 half close parentheses plus 7 equals space minus 1 over 8 minus 4 over 4 minus 6 plus 7 equals negative 1 over 8 minus 1 minus 6 plus 7 equals negative 1 over 8 W h e n space space x cubed minus 4 x squared plus 12 x plus 7 space i s space d i v i d e d space b y space open parentheses x plus 1 half close parentheses comma space t h e space r e m a i n d e r space i s space minus 1 over 8.
Answered by Prasenjit Paul | 26 Jun, 2015, 09:46: AM
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