Answer:
78=12
I hope this help because i love helping out
x=0 or x=0.871157
Step-by-step explanation:
Step 1:
18x5+6x4−12x3−6x2=6x2−6x2
=
18x5+6x4−12x3−6x2=0
Step 2:
6x2(3x3+x2−2x−1)=0
Step 3:
6x2=0 or 3x3+x2−2x−1=0
