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Nguyễn Minh
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2024-11-05 22:06:46
a=y(x+y)-(x+y)
=(x+y)(y-1)
b=
2024-11-05 21:56:32
a) = 4x3y-2
b)= x3-2x2+xy-x2y+2xy-y2−x3
+x2
y
=-2x2+3xy-y2
2024-10-26 23:04:48
a) 6x-2=10
6x=10+2
6x=12
x=12:6
x=2
b) (3x)2+2.(3x).4+42-(3x)2-12=49
9x2+24x+16-9x2-1=49
24x+16-1=49
24x=49-16+1
24x=34
x=34:24
2024-10-26 22:41:45
a) A=5x2y-3x+1