Question

Evaluate the following product using identities
a) (69)^2
b) (704)^2
c) (999)^2​

Answer 1

Answer:

${69}^{2} = 4761 \\ {704}^{2} = 495616 \\ {999}^{2} = 998001$

Step-by-step explanation:

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Answer 2

Answer:

a) 69² = (70-1)²

= 70² - (2×70×1) + 1²

= 4900 - 140 + 1

= 4761

b) 704² = (700+4)²

= 700² + (2×700×4) + 4²

= 490000 + 5600 + 16

= 495616

c) 999² = (1000-1)²

= 1000² - (2×1000×1) + 1²

= 1000000 - 2000 + 1

= 998001