Question

If a − b = 9 and a
2 + b
2 = 881, where a and b are natural numbers. Find a + b

Answer 1

Answer:

These answer simple step by step

Answer 2

Answer:

a = b + 9

so, (b+9)² + b² = 881

2b² + 81 + 2b² + 18b = 881

4b² + 18b + 81 = 881

4b² + 18b - 800 = 0

2b² + 9b - 400 = 0

b = (-9 +- 41) /4

b = 8

a = 9 + 8 = 17

so a + b = 8+17 = 25