121x^4-133x^2 y^4+36y^8 me ayudan con el procedimiento, por fas es un trinomio por adición o sustracción

Combine like terms to make a simpler expression 3z+z

How to write four times a number,minus 6,is equal to theee times the number+8 as an equqtion

Uestion 1(multiple choice worth 5 points) (05.02)alex wants to paint one side of his skateboard ramp with glow-in-the-dark paint, but he needs to know how much area he is painting. calculate the area of the isosceles trapezoid. isosceles trapezoid with top base 12 feet, bottom base of 18 feet, and height of 6 feet. 72 ft2 84 ft2 90 ft2 108 ft2