Question

[(3x^(3)(\sqrt(x^(2) +4x^(2))) + 9x^(4))/(2)]^((1)/(2))+6x = 448 find x

Answer 1

Answer:

matter, material substance that constitutes the observable universe and, together with energy, forms the basis of all objective phenomena. ... The three most familiar forms, or states, of matter are solid, liquid, and gas.