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P = 12xy – 10y2 – 18x2,
Q = 14x2 + 12y2 + 9xy, and
R = 5y2 – x2 + xy
then (P + Q) – R =
5Q:
P = 12xy – 10y2 – 18x2,
Q = 14x2 + 12y2 + 9xy, and
R = 5y2 – x2 + xy
then (P + Q) – R =
- 122xy – 3x2 + 3y2false
- 222xy + 3x2 – 3y2false
- 320xy – 3x2 – 3y2false
- 420xy – 3x2 – 3y2true
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