Question

22. Simplify by applying standard formula.
(e) (a + b-c)(a - b+c)​

Answer 1

Answer:

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

=a^2-ab+ac+ab+bc-ac+bc

=a^2+2bc

Answer 2

(a+b-c)(a-b+c)
=a^2-ab+ac+ba -b^2+bc -ac+bc-c^2
=a^2-b^2-c^2 + 2bc