The problem of merging similar items in grade one of junior high school, Remove the brackets and merge the same items x+(2x-1)-(x/3+3) 1 / 2 (square of X-Y) + 1 / 3 (square of X-Y) + 1 / 6 (square of X + square of Y)

The problem of merging similar items in grade one of junior high school, Remove the brackets and merge the same items x+(2x-1)-(x/3+3) 1 / 2 (square of X-Y) + 1 / 3 (square of X-Y) + 1 / 6 (square of X + square of Y)

x+(2x-1)-(x/3+3)
=X+2X-1-X/3-3
=(1+2-1/3)X-4
=8/3X-4
1 / 2 (square of X-Y) + 1 / 3 (square of X-Y) + 1 / 6 (square of X + square of Y)
=1 / 2x square - 1 / 2Y + 1 / 3x-1 / 3Y square + 1 / 6x square + 1 / 6y square
=(1 / 2 + 1 / 6) xsquare - (1 / 3-1 / 6) ysquare + 1 / 3x-1 / 2Y
=2 / 3x square - 1 / 6y square + 1 / 3x-1 / 2Y