If P = 2x² + 3x²y + 3xy - 5y², Q = -5x² -4x²y + 2xy + 3y² and
R=-3x²- x²y + 5xy - 2y², show that P + Q - R = 0.
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Answer:
both are equal.
Step-by-step explanation:
P + Q - R = 0
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