Answer:
(x+7)² = x²+14x+49
Step-by-step explanation:
(x+7)² = (x+7)(x+7) = x²+7x+7x+49
x² + 14x + 49
Here is the answer fellow Nepali
(x + 7)² = x² + 14x + 49
using (a+b)² = a² +2ab + b²
