Aperfect square trinomial can be represented by a square model with equivalent length and width. which polynomial can be represented by a perfect square model?

x2 – 6x + 9
x2 – 2x + 4
x2 + 5x + 10
x2 + 4x + 16

With this question! what is process of elimination? ? p. s. my brothers acc got banned so add his new one @ yamauchiyamyam17

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap

Walking at a constant rate of 8 kilometers per hour, juan can cross a bridge in 6 minutes. what is the length of the bridge in meters?