How to answer (4+5sqrt3)^2 ? How to simplify the answer here?

1 Answer
Jade
Apr 10, 2018

91+40sqrt3

Explanation:

(4+5sqrt3)^2
rArr 4^2+2*4*5sqrt3+(5sqrt3)^2
color(blue)(Since,(a+b)^2=a^2+2ab+b^2
rArr 16+40sqrt3+25*3
rArr 16+75+40sqrt3
rArr 91+40sqrt3

That's it,
Hope this helps :)

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