2000 should be it I'm pretty sure
2x^2 + 28x + 98 =
2(x^2 + 14x + 49) =
2(x + 7)(x + 7) <==
Answer:

Step-by-step explanation:
Answer:690 580 470 360 250 140
Step-by-step explanation:
These digits are all numbers that the hundreds digit is three less than the tens digit, the ones digit is also zero