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 ,

answer: the resulting cross section is a rectangle. solution: a plane parallel to the base of a triangular prism will intersect a cross section that is the same shape as its bases. so the cross section is a triangle.

step-by-step explanation: