Question

Write the expanded form of : -

a) 3

2

2

3

b)

2

2​

Answer 1

Answer:

Formula,

(a−b−c)2=a2+b2+c2−2ab+2bc−2ac

(2a−3b−c)2=(2a)2+(3b)2+c2−2(2a)(3b)+2(3b)c−2(2a)c

=4a2+9b2+c2−12ab+6bc−4ac