8. To what expression must 99x3 – 33x2 – 13x – 41 be added to make the sum zero?
9. If P = 2x2 – 5x + 2, Q = 5x2 + 6x – 3 and R = 3x2 – x – 1. Find the value of 2P – Q + 3R.
10. Rohan’s mother gave him ₹ 3xy2 and his father gave him ₹ 5(xy2 + 2). Out of this total money he spent ₹ (10 –3xy2) on his birthday party. How much money is left with him?
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the answer is ₹264883
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