Question

using identity (a+b)² =a²+b²+2ab solve 51​

Answer 1

Please refer the attachment

Answer 2

Step-by-step explanation:

1. $51 = (50 + 1) {}^{2} \\ (a + b) {}^{2} = a {}^{2} + 2ab + {b}^{2} \\ ( {50) }^{2} + 2(50)(1) + ( {1)}^{2} \\ 2500 + 100 + 1 \\ = 2601$