Evaluate: (339)² - (161)²

Solution:

Given, (339)² - (161)²

Using standard identity: (a² - b²) = (a + b)(a - b)

Here a = 339 and b = 161

(339)² - (161)² = (339 + 161)(339 - 161)

= (500)(178) = 89000

✦ Try This: Evaluate: (321)² - (179)²

Given, (321)² - (179)²

Using standard identity: (a² - b²) = (a + b)(a - b)

(321)² - (179)² = (321 + 179)(321 - 179)

= (500)(142) = 71000

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 9

NCERT Exemplar Class 8 Maths Chapter 7 Problem 86(xx)

Evaluate: (339)² - (161)²

Summary:

Evaluating (339)² - (161)² we get, 89000

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