Question

using the formula (a+b)^2=(a^2+2ab+b^2) evaluate (408)^2​

Answer 1

Answer: 166,464

Step-by-step explanation:

408 = 400 + 8

Using the formula,

(a+b)² = a² + 2ab + b²

(400+8)² = (400)² + (2 × 400 × 8) + (8)²

(408)² = 160,000 + 6400 + 64

(408)² = 166,464

Hope that helps