Question

formula of algebric formula​

Answer 1

Answer:

Important Formulas in Algebra

(a + b + c + …)2 = a2 + b2 + c2 + … + 2(ab + ac + bc + ….)

Answer 2

$= > { |a + b | }^{2} = {a}^{2} + {b}^{2} + 2ab$

$= > { |a - b| }^{2} = {a }^{2} + { b}^{2} - 2ab$