Question

1. Find following by using identities:- (2xy+5y)?​

Answer 1

Step-by-step explanation:

(2xy+5y)

2

Using,

(a+b)

2

=a

2

+2ab+b

2

we get,

=(2xy)

2

+2(2xy)(5y)+(5y)

2

=4x

2

y

2

+20xy

2

+25y

2