Answer:
[tex](-\frac{4}{3}\pi r^3 x)+(4\pi r^2y)=4\pi r^2(-\frac{1}{3}rx+y)[/tex]
Step-by-step explanation:
[tex](-\frac{4}{3}\pi r^3 x)+(4\pi r^2y)\\\\=[4\pi r^2\times (-\frac{1}{3}rx)]+[4\pi r^2y]\\\\4\pi r^2\ is\ common\ in\ both\ expression\\\\ =4\pi r^2(-\frac{1}{3}rx+y)\\\\(-\frac{4}{3}\pi r^3 x)+(4\pi r^2y)=4\pi r^2(-\frac{1}{3}rx+y)[/tex]
