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3x2 + 6xy -10x + 4y -8
b.3(2×-4)-2(2×-1) = 6x -12 -4x +2
2x-10
c.(×-y)(×+2y-3) = x2 + 2xy -3x -xy -2y2 +3y
x2+ xy -3x -2y2 + 3y
x2 -2y2 + xy -3x + 3y
d.(3×+y)(2×-4y+3) = 6x2 - 12xy + 9x + 2yx -4y2 + 3y
= 6x2 - 10xy + 9x - 4y2 + 3y
= 6x2 - 4y2 - 10xy + 9x + 3 y
=3x²+6xy-12x+2x+4y-8
=3x²+6xy+4y-8
b.3(2×-4)-2(2×-1)
=6x-12-4x+2
=2x-10
c.(×-y)(×+2y-3)
=x²+2xy-3x-xy-2y²+3y
=x²-2y²+xy-3x+3y
d.(3×+y)(2×-4y+3)
=6x²-12xy+9x+2xy-4y²+3y
=6x²-4y²-10xy+9x+3y
smg mmbntu :)