InterviewSolution
Saved Bookmarks
| 1. |
Prove the following : [[x+4,2x,2x],[2x,x+4,2x],[2x,2x,x+4]]-(5x+4)(4-x)^2 |
|
Answer» SOLUTION :`[[x+4,2X,2x],[2x,x+4,2x],[2x,2x,x+4]]` `[R_1rarrR_1+R_2+R_3]` `[[5x+4,5x+4,5x+4],[2x,x+4,2x],[2x,2x,x+4]]` =`(5x+4)[[1,1,1],[2x,x+4,2x],[2x,2x,x+4]]` `[C_2rarrC_2-C_1,C_3rarrC_3-C_1]` =`(5x+4)[[1,0,0],[2x,4-x,0],[2x,0,4-x]]` =`(5x+4)(4-x)^2` |
|