cinco masas puntuales son situadas en una recta con una distancia de X1=5 y X2=3 posicione a la derecha X3=4, X4=2, X5=6 posicione a la izquierda con una masa de 2,3,1,4,0,5kilogramos. cuál es el centro de masa​

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.