Obtenga la diferencia común, el décimo termino y la suma de los primeros 10 términos de cada una de las siguientes series aritméticas: 1) 1,-4,-9...
2) 9/2, 39/8, 21/4,...
3) 125, 95, 65...
4) 1.35, 1.20, 1.05...

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4