Question

(a+b-c)²
help and get points​

Answer 1

Step-by-step explanation:

$(a + b - c) {}^{2} \\ a {}^{2} + {b}^{2} + c {}^{2} + 2ab - 2bc - 2ca$

I hope it helps you

Answer 2

Answer is

$a^2+b^2+c^2+2ab-2bc-2ca$