How do you find the sum or difference of (x^2y-3x^2+y)+(3y-2x^2y)(x2y3x2+y)+(3y2x2y)?

1 Answer
Apr 30, 2018

-3x^2 -x^2y+4y3x2x2y+4y

Explanation:

In this expression the brackets are not necessary because it is an addition.

color(blue)(x^2y) color(red)(" "- 3x^2) color(green)(" "+y +3y) color(blue)(" "-2x^2y)" "larrx2y 3x2 +y+3y 2x2y identify the like terms

=color(red)(-3x^2) color(blue)(" "+x^2y -2x^2y) color(green)(" "+y+3y)" "larr=3x2 +x2y2x2y +y+3y re-arrange

=color(red)(-3x^2)" " color(blue)(-x^2y) color(green)(" "+4y)" "larr=3x2 x2y +4y simplify the like terms