Answer:
a+3
Step-by-step explanation:
You cannot go any further in answering this question. These two terms are not like terms so they cannot be combined. Therefore, the answer is just a+3 itself.
Answer:
2
Step-by-step explanation:
two plus four equals six
Answer:
B. 28
Step-by-step explanation:
35^2-21^2=784
Square root of 784= 28 : )