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NAND LAL PUBLICATION-ALGEBRAIC EXPRESSIONS AND IDENTITIES -EXERCISE 9.5
- Find the following squares by using the identities : (2xy + 5y)^2
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- Simplify : (a^2 – b^2)^2
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- Simplify : (2x + 5)^2 – (2x – 5)^2
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- Simplify : (7m – 8n)^2 + (7m + 8n)^2
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- Simplify : (4m + 5n)^2 + (5m + 4n)^2
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- Simplify (2.5 p - 1.5 q ) ^(2) - ( 1. 5 p - 2 5 q ) ^(2)
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- Simplify : (ab + bc)^2 – 2ab^2c
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- Simplify : (m^2 – n^2m)^2 + 2m^3n^2
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- Show that: (3x + 7)^2 – 84x = (3x – 7)^2
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- Show that: (9p – 5q)^2 + 180pq = (9p + 5q)^2
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- Show that: (4/3m-3/4n)^2 +2mn=(16)/9m^2+9/16n^2
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- Show that: (4pq + 3q)^2 – (4pq – 3q)^2 = 48pq^2
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- Show that: (a – b) (a + b) + (b – c) (b + c) + (c – a) (c + a) = 0
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- Using identities, evaluate: 71^2
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- Using identities, evaluate: 99^2
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- Using identities, evaluate: 102^2
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- Using identities, evaluate: 998^2
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- Using identities, evaluate: 5.2^2
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- Using identities, evaluate: 297xx303
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- Using identities, evaluate: 78xx82
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