Question

whole square of a-b+c

Answer 1

hey mate,

(a - b + c)²

= (a)²+(-b)²+(c)²+ 2.(a).(-b) + 2.(-b).(c) + 2.(c).(a)

=a² + b² + c² - 2ab - 2bc + 2ca

hope it helps ☺☺✌

Answer 2

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