Using identities,evaluate: 52^2....

Using identities,evaluate:
`52^2`.

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Verified by Experts

The correct Answer is:

`79.21 `

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SWAN PUBLICATION-ALGEBRAIC EXPRESSIONS AND IDENTITIES -EXERCISE 9.5

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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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 : 78 xx 82
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Using identities,evaluate: 52^2.
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Using identities, evaluate : 1.05 xx 9.5
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Using a^2 – b^2 = (a + b) (a – b), find: 51^2 – 49^2
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Using a^2 – b^2 = (a + b) (a – b), find: (1.02)^2 – (0.98)^2
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Using a^2 – b^2 = (a + b) (a – b), find: 153^2 – 147^2
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Using a^2 – b^2 = (a + b) (a – b), find: 12.1^2 – 7.9^2
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Using (x + a) (x + b) = x^2 + (a + b) x + ab, find: 103xx104
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Using (x + a) (x + b) = x^2 + (a + b) x + ab, find: 5.1xx5.2
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Using (x + a) (x + b) = x^2 + (a + b) x + ab, find: 103xx98
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