3. (i) 20x2 – 45y2 ] 4. (i) 9(x + y)2 – x² 5. (i) 25(a + b)2 - 16(a - b)2 6. (i) x2 - 25x 7. (i) x2 - y2 + 2x +1 8. (i) 9x2 - y2 + 4y - 4 9. (i) 625-p4 10. (i) x4 - y4 DICIUC OF TRINOMIALS20 एक्स स्क्वायर टू माइनस 45 स्क्वायर टू
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please make me brainlist
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ok
plz brainlist
21
46
35
78
45
456
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