Q. Which expression is equivalent to 2z+z?Choices:(A) 4z(B) z3(C) 3z(D) $z + \(3\)
Given Expression: We are given the expression 2z+z and need to find an equivalent expression from the given choices.To combine like terms, we add the coefficients of z.2z+z=(2+1)z=3z
Combine Like Terms: Now we compare our result with the given choices to find the equivalent expression.(A) 4z is not correct because 4z would imply 4 times z, not 3 times z.(B) z3 is not correct because it implies z raised to the power of 3, not z multiplied by 3.(C) 4z1 is correct because it is the result we obtained from adding 4z2 and z.(D) 4z4 is not correct because it implies z plus 3, not 3 times z.