Question

simplify (a+b+c)(a+b-c) ​

Answer 1

Step-by-step explanation:

(a+b+c)(a+b-c)

(a+b+c)²

a² + b²+c²+2ab+2bc+2ac

Answer 2

Step-by-step explanation:

let Assume X y

( a+b+c) (a-(b+c)

a+ ( b+c ) a- ( b+ c )

X y X. y

a^2 - ( b+c ) ^2

a^2 - ( b^2+c^2+2bc)

a^2-b^2-c^2-2bc

thanks dear friend