Factorise the following expressions :​

i) a² + 10a + 25

= a² + 2.5a + 5²

= (a + 5)²

iv) 25x² + 9y² - 30xy

= (5x)² - 2.3.5xy + (3y)²

= (5x - 3y)²

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

dont think so

step-by-step explanation: