Question 666397
{{{(-1/3)x^3 + (1/4)x^2y + 8xy^2}}}
+{{{-x^3 - (1/2)x^2y + xy^2}}}
........
Add each like term separately
{{{(-1/3)x^3 + (-1)x^3 = (-1/3)x^3 - (3/3)x^3 = (-4/3)x^3}}}
...
{{{(1/4)x^2y + (-1/2)x^2y = (1/4)x^2y - (1/2)*(2/2)x^2y = (1/4)x^2y - (2/4)x^2y = (-1/4)x^2y}}}
...
{{{8xy^2 + 1xy^2 = 9xy^2}}}
...
Yielding
{{{highlight_green((-4/3)x^3 - (1/4)x^2y + 9xy^2)}}}
.....................
Delighted to help.
-Reading Boosters
Wanting for others what we want for ourselves.
www.MyHomeworkAnswers.com