Question

Find the product with the help of formula: i) (a-b+c) (a+b-c)


Please show me step by step please ​

Answer 1

Step-by-step explanation:

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

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

=a*a-ab+ac-ba+b*b-bc+ca+cb+c*c

=a²+b²+c²-2ab+2ac