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Subtract: (i) − 5y2 from y2 (ii) 6xy from − 12xy (iii) (a − b) from (a + b) (iv) a (b − 5) from b (5 − a) (v) − m2 + 5mn from 4m2 − 3mn + 8 (vi) − x2 + 10x − 5 from 5x − 10 (vii) 5a2 − 7ab + 5b2 from 3ab − 2a2 −2b2 (viii) 4pq − 5q2 − 3p2 from 5p2 + 3q2 − pq |
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