Question

.Expand: (2a + b – 3c) 2

Answer 1

Answer:

(2a+b+3c)^2

Step-by-step explanation:

answer in step by step

Answer 2

(2a-b+3c)2

=(2a)2 +(-b)2 +(-3c)2 + 2(2a)(-b) +2(-b)(-3c) +2(-3c)(2a)

=4a2 +b2 +9c2 -4ab +6bc -12ca.