Q6 of 95 Page 84

Add:

2x3 – 9x2 + 8, 3x2 – 6x – 5, 7x3 – 10x + 1 and 3 + 2x – 5x2 – 4x3

Let’s arrange the data in a table in the form of descending power of x,


We will get rows and columns; add the data column wise;



So, the answer after adding all the expressions will be;


5x3 - 11x2 – 14x + 7


More from this chapter

All 95 →
4

Add:

5x – 8y + 2z, 3z – 4y – 2x, 6y – z – x and 3x – 2x – 3y

 5

Add:

6ax – 2by + 3cz, 6by -11ax – cz and 10 cz -2ax – 3by

 7

Add:

6p + 4q – r + 3, 2r - 5p – 6, 11q - 7p + 2r – 1 and 2q – 3r + 4

 8

Add:

4x2 – 7xy + 4y2 – 3, 5 + 6y2 – 8xy + x2 and 6 – 2xy + 2x2 – 5y2