Question

If w2 + 11 w = w - 9, which of the following gives all
possible value of w3?
A) 81 only
B) 1 only
C) -1 and 729 only
D) -1 and -729 only

Answer 1

Answer:

D

Step-by-step explanation:

w2+11w-w+9=0

w2+10w+9=0

w2+w+9w+9=0

w(w+1)+9(w+1)=0

(w+1)(w+9)=0

w=-1,-9

w3=(-1)^3=-1

w3=(-9)^3=-729

hope this helps