Question

please send me some formula of identity.​

Answer 1

Identities:

$<bullet><b>$

1. (a+ b)² = a²+ 2ab + b²

2. (a - b)² = a² - 2ab + b²

3. (a + b) (a - b) = a² - b²

4. (x + a) (x + b) = x² + (a + b) x + ab

Answer 2

⭐Answer⭐

Some Formula of identity

♠ (a+b)²=(a²+b²+2ab)

♠ (a-b)²=(a²+b²-2ab)

♠ (a²-b²)=(a+b)(a-b)

♠ (a+b)³=(a³+b³+3a²+3ab²)

♠ (a-b)³= (a³-b³-3a²b+3ab²)

♠(a³+b³)=(a+b)(a²+b²-ab)

♠ (a³-b³)=(a-b)(a²+b²+ab)

♠ (a+b)(a+c)= [a²+a(b+c)+bc]

♠ (a-b)(a-c)=[a²-a(b+c)+bc]

♠ (a+b+c)²=[a²+b²+c²+2(ab+bc+ca]

♠ (a+b+c)³=(a³+b³+c³)+3(a+b)(b+c)(c+a)

✏Hopes its help's u.