Q.9) Find the sum of: (i) 3x2 - 2xy + 4y2 and - x2 + 4xy – 2y? 2. - -
(ii) 3p + 49 + 7r, -5p + 39 - 6r and 4p - 29 - 4r
(iii) 2a² + ab - b?, -a? + 2ab + 3b2 and 3a? - 10 ab + 4b2
(iv) k- k + 1, -5k2 + 2k - 2 and 3k2 - 3k + 1 (V) x² - xy + yz, 2xy + yz - 2x2 and -3yz + 3x2 + xy + (vi) 4u2 + 7 - 3u, 4u - u? + 8 and -10 + 5u - 2u2
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