If A = 2y2 + 3x -x?, B = 3x² - y2 and C = 5x2 – 3xy then find
(i) A+B (ii) A -B (iii) B+C (iv) B-C (v)A+B+C (vi) A+B-C
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box contains 145 chocolate. find the number of chocolate in 65 such boxes
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