Question

what is the expansion of (a-b+c)^2

Answer 1

Here is your answer=

Hi ,

(a - b - c )^2

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

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

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

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

Thetefore,

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

I hope this will useful to you.

Mark as brainliest!!