Answer:
One
Step-by-step explanation:
If all the terms are like terms that means that can all be combined.
Examples:
5+4+3+2+1=15=one term
x+4x+5x+10x+20x=40x=one term
Examples of unlike terms:
20xy+3x+4x+5y+7z=20xy+7x+5y+7z
y+z+2y+3z+a=3y+4z+a
Hope this helps!