Question

2(a - b)²=???????????? ​

Answer 1

2(a - b)² = 2(a² - 2ab + b²) = 2a² - 4ab + 2b²

Answer 2

$2cdotBig(a-bBig)^2=2cdotBig((a)^2-2cdot a cdot b + (b)^2 Big)=2cdot a^2+2cdotBig(-2abBig)+2cdot b^2=2a^2-4ab+2b^2$