Question

(a-b)²=? Why are the polynomial formula and what is derive

Answer 1

$(a - b) {}^{2} = a {}^{2} - b {}^{2}$
and
$a {}^{2} - b { }^{2} = a {}^{2} - 2(ab) + b { }^{2}$

Answer 2

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

Therefore, the polynomial formula is:
(a - b)² = a² - 2ab + b²

HOPE IT'LL HELP...:)