The first expression is equivalent to B
The second expression is equivalent to A
The third expression is equivalent to C
You are basically adding like terms. For example for the first expression, it is 7x^2 + 2x^2, which equals 9x^2. Remember since you're adding, do not add the exponents.
Answer:
5x + 6
Step-by-step explanation:
3X + 2X = 5X
4 + 2 = 6
5X + 6 IS SIMPLIST FORM