Jawabanmu

2014-08-10T16:04:32+07:00
A. 4x+5 + -6x-10 = 4x-6x + 5-10 = -2x-5
b. 2x²+4x+6 + -3x²-6x+4 = 2x²-3x² +4x-6x + 6+4 = -x² -2x -10
c. -4y² -6y +4 + 5y² +2y -10 = -4y²+5y² -6y+2y +4-10 = y² - 4y -6
d. x² -4x+2 + -6x²-2x-4 = x-6x² -4x-2x +2-4 = -5x² - 6x -2