Factor the expression: 2x^2 +21x+49

Write an explicit formula that represents the sequence defined by the following recursive formula:

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?