Factorize completely the expression(h+2k)²+4k²-h²

Step-by-step explanation:

A expression is given to us and we need to factorise it . The given expression is ,

Open the brackets using the identity, (a +b)² = a² + b² + 2ab , we have ;

Simplify ,

In the above expression 4k is common in both the terms , so that ,

- 70

this is the answer for you hope it

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.