Question

43. When expanded, the expression
(a + 2b – c)2 is equal to
(A) a² + 4b2 + c2 - 2ab - 2bc - ac
(B) a2 + 4b2 + c2 + 4ab + 4bc + 2ac
(C) a2 + 4b2 + c2 + 4ab-4bc - 2ac
+
(D) a2 + 4b2 + c2 + 4ab - 4bc - 4ac​

Answer 1

Answer:

(C). a²+4b²+c²+4ab-4bc-2ac