Question

expansion of (4+✓5y)²​

Answer 1

Answer:

yes possible first

a+b the whole square then you will get

5y^2 + 8root5y+ 16

applying quadratic formula  

you will get -4root5/5 as both the routes

Step-by-step explanation:

Answer 2

Step-by-step explanation:

=(4+✓5y)²

=16+5y^2

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