Question

answer all these questions​

Answer 1

Answer:

Find the term independent of x.

Step-by-step explanation:

In the expansion of: (x- 1 upon x)12

Answer 2

Answer:

questions 4

ap = (a-3d ) (a-d) (a+d)(a+3d)

ap = 4a = 20

ap = a = 5

now

on squaring

4( a2 + 5d2)= 120

4× 25 +20d2 = 120

100 + 20d2 = 120

20d2 = 20

d= 1

so the required ap is 2 4 6 ..