Question

a)10x^2+7xy+4xy-10x^2

b)5a^3+2b^5-6+c^2-3a^3+4

c)3.(4a-b)+2a+5b-6

d)x.(2x+3y)-11.(xy+2y)+2x^2

Answer 1

a) 10x² +7xy +4xy -10x² =
     10x² -10x² +3xy =
     +3xy

b) 5a³ + 2b⁵ -6 + c² -3a³ +4 =
    5x³ -3a³ +2b⁵ +c² -6 +4 =
    2x³ +2b⁵ +c³ -2

c) 3 (4a -b) +2a +5b -6 =
    12a - 3b +2a +5b -6 =
    12a +2a -3b +5b -6 =
    14a +2b -6

d) x (2x +3y) -11.(xy + 2y) +2x² =
    2x² +3xy -11xy -22y + 2x²=
    2x² +2x² +3xy -11xy -22y =
    4x² -8xy -22y