a)
(y²+5y-6)+(2y²-y+8) = y²+5y-6+2y²-y+8 = 3y²+4y+2
b)
(3xy-5x²y)-(10xy-2x²y) = 3xy-5x²y-10xy+2x²y = -7xy-3x²y
c)
2(3y+2x)-3(2y-3x) = 6y+4x-6y+9x = 13x
a) (y^+5y-6)+(2y^-y+8) =3y^+4y+2
b) (3xy-5x^y)-(10xy-2x^y) = 3xy-5x^y-10xy+2x^y =-7xy -3x^y
c) 2(3y+2x)-3(2y-3x)= 6y+4x -6y+9x = 13x
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a)
(y²+5y-6)+(2y²-y+8) = y²+5y-6+2y²-y+8 = 3y²+4y+2
b)
(3xy-5x²y)-(10xy-2x²y) = 3xy-5x²y-10xy+2x²y = -7xy-3x²y
c)
2(3y+2x)-3(2y-3x) = 6y+4x-6y+9x = 13x
a) (y^+5y-6)+(2y^-y+8) =3y^+4y+2
b) (3xy-5x^y)-(10xy-2x^y) = 3xy-5x^y-10xy+2x^y =-7xy -3x^y
c) 2(3y+2x)-3(2y-3x)= 6y+4x -6y+9x = 13x