67) Divide and check 14x^9-28x^7+35x/7x?

Question

68) Divide x^2+4x-48/x+9

Answer 1

Question 67
Assume (14x^9 - 28x^7 + 35x) / (7x)
ie WHOLE of top line has to be divided NOT just the 35x:-
Answer is 2x^8 - 4x^6 + 5
Check
(7x) (2x^8 - 4x^6 + 5) = 14x^9 - 28x^7 + 35x

Question 68
Assume division by (x + 9) rather than division by x as given in question. Also assume - 48 is meant to be - 45.
Using the method of synthetic division:-

********|1*******4*******- 45
*****- 9|*******- 9******* 45
_________________________
********|1*****- 5******* 0
_________________________

Answer is (x - 5)

Answer 2

67. 2x^8 - 4x^6 +5
68. (x+9)(x-5)/(x+9)= (x-5) I think the -48 is -45

Answer 3

42.