a man bought a pencil for rupees 4 x + 7 and a pen for rupees 5 x square + 7 x minus 3 he gave rupees to x cube + 3 x minus 5 to the shopkeeper how much money did he get back
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cost of pencil=Rs 4x +7
cost of pen=Rs 5x square+7x -3
Total cost =4x +7 +5x square +7x-3
=5x square +11x+4
He gave money to the shopkeeper=x cube+3x-5
Money he get back from the shopkeeper=x cube +3x-5-(5x square+11x+4)
=x cube +3x-5-5x square -11x-4
=x cube -5x square-8x-9 A
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