Question

write the square of x+1 using this equation find the square of 101

Answer 1

(x+1)² = x² + 2×x×1 + 1² = x² + 2x + 1

101 = 100 + 1
take x=100
101² = (100+1)² = 100² + 2×100 + 1 = 10000 + 200 + 1 = 10201