Question

plz answer fast and fast plz​

Answer 1

Answer:

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Answer 2

Answer:

a. 4c^2+4cd+d^2

Step-by-step explanation:

by using formula (a+b)^2 we can solve these problem

(a+b)^2=a^2+2ab+b^2

take a=2c

b=d

a^2=(2c)^2=4c^2

b^2=d^2

2ab=2(2c)(d) =4cd

therefore, full answer is

4c^2+4cd+d^2