Question

ME AJUDEM PF

calcule o 8° termo da PA (x,x+y,y/2,...)​

Answer 1

$\Large\boxed{\begin{array}{l}\sf\bigg(x,x+y,\dfrac{y}{2}\dotsc\bigg)\\\sf r=\backslash\!\!\!x+y-\backslash\!\!\!x=y\\\sf a_8=a_3+5r\\\sf a_8=\dfrac{y}{2}+5\cdot y\\\\\sf a_8=\dfrac{y+10y}{2}\\\\\huge\boxed{\boxed{\boxed{\boxed{\sf a_8=\dfrac{11y}{2}}}}}\end{array}}$