please give me answers if you know one solution so please give me
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7) a³-4a²+5a-a-a²+5a-6
a³-5a²+9a-6
6) 3500/1000
3.5 cm
9) 15/100 * 510 = 153/2 = 76.5
so, SP = 510 - 76.5 = 500 - 66.5 = Rs.433.5
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