Evaluate: (132)² - (68)²

Solution:

Given, (132)² - (68)²

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

Here a = 132 and b = 68

(132)² - (68)² = (132 + 68)(132 - 68)

= (200)(64) = 12800

✦ Try This: Evaluate: (122)² - (78)²

Given, (122)² - (78)²

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

(122)² - (78)² = (122 + 78)(122 - 78)

= (200)(44) = 8800

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

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

Evaluate: (132)² - (68)²

Summary:

Evaluating (132)² - (68)² is 12800

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