The expression (5x + 4)^3 in expanded form is 125 x3 + 300 x2 + 240 x + 64. The expression will have also a root of x = -4/5. This is the form of trinomial expansion and can be solve by multiplying the the term 3 times.
Answer:
x=-85
Step-by-step explanation:
x <4
2x-9<-1
Add 9 to each side
2x-9+9<-1+9
2x < 8
Divide each side by 2
2x/2 < 8/2
a=2
3(3a+2)+6=30
9a+6+6=30
9a+12=30
9a=18
