Page 1 :
Algebraic Identities, , If an equality holds true for all values of the variable, then it is called an Identity., , , , Identity 1: (a + y) =a’ + 2ayty?, , , , , , , , Identity 2: (a - 4) =a’ - 2ay+y?, , , , , , , , Identity 3: («+ y) (w-y) =a°-y?, , , , , , , , Identity 4: (a+y+<) =a ty +2 + 2ay + 2yz + 22a, y y ay F Lye, , , , , , , , Identity 5: (a + y) =a° +y° + 3ay (a+, %) y nay ¥), , Identity 6: (a - y)’ = a°- y° - 3ay (a - y), , , , , , Identity 7: a’ + y° = (a + y) (a - ay + y’), , , , , , Identity 8: 2°- y° = (w-y) (2° + ay ty’), , , , , , Identity 9: 2° + y° + 2°-3ayz=, (a+y +z) (a! + y+ 2 - ay yz 2a), =a letyt z){(x-y) + y-z) + (e-2)}