Answer:
20%.
Step-by-step explanation:
Answer:

Step-by-step explanation:
Start by factoring a
out:

For the term
, we're looking for two numbers that add up to 0 and multiply to be -49:

Two numbers: 
Therefore, we have:

Step-by-step explanation:
4(14+21) is one way you can write it
Answer:
Step-by-step explanation: i don’t understand the question, but the expansion is 4m + 8