A) +10
B) 10

A) expression
B) Expression

A) equation
B) Equation

A) 4
B) +4

A) True
B) False

A) ab
B) 3ab
C) 4ba
D) 5b²a

A) the same number of letters
B) the same group of letters in the same order only
C) the same group of letters which have the same powers

A) 3xy²
B) xy²
C) -5x²y
D) -7y²x

A) 2abc
B) 2a²bc³
C) 5a²c³b
D) 2ab³c³
E) -4ba²c³