Question

what is the square of: a+b-c​

Answer 1

Answer:

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

Step-by-step explanation:

If I am wrong then sorry

Answer 2

ANSWER==

a²+b²+c²+2ab-2bc-2ca

Step-by-step explanation:

we will use 3rd identity

(a+b-c)²=a²+b²+c²+2(a)(b)+2(b)(-c)+2(-c)(a)

a²+b²+c²+2ab-2bc-2ca