If P = 2x2 + 3x2 y + 3xy – 5y2 ; Q = - 5x2 – 4x2 y + 2xy + 3y2 and

1.	If P = 2x2 + 3x2 y + 3xy – 5y2 ; Q = - 5x2 – 4x2 y + 2xy + 3y2 and R = -3x2 - x2 y + 5xy – 2y2 Show that P + Q – R = 0
Answer» ANSWER: p=4+6y+3xy-10y ;q=-10-8y+2y+6y ;r=-6-2xy+5xy-4y p=4-4y+3xy; q=-10 r=-4y+3xy-6 p+q-r 4-4y+3xy-10+4y-3xy+6=0

If P = 2x2 + 3x2 y + 3xy – 5y2 ; Q = - 5x2 – 4x2 y + 2xy + 3y2 and R = -3x2 - x2 y + 5xy – 2y2 Show that P + Q – R = 0

Answer»

ANSWER:

p=4+6y+3xy-10y ;q=-10-8y+2y+6y ;r=-6-2xy+5xy-4y

p=4-4y+3xy; q=-10 r=-4y+3xy-6

p+q-r

4-4y+3xy-10+4y-3xy+6=0

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If P = 2x2 + 3x2 y + 3xy – 5y2 ; Q = - 5x2 – 4x2 y + 2xy + 3y2 and R = -3x2 - x2 y + 5xy – 2y2 Show that P + Q – R = 0

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