b)(2√2-3√10)²
zróbcie mi to:) dam naj
b)(2√2-3√10)² = (2√2)² - 2 * 2√2 * 3√10 + (3√10)² = 4 * 2 - 12√20 + 9 * 10 = 8 - 24√5 + 90 =
= 98 - 24√5 = 2(49 - 12√5)
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b)(2√2-3√10)² = (2√2)² - 2 * 2√2 * 3√10 + (3√10)² = 4 * 2 - 12√20 + 9 * 10 = 8 - 24√5 + 90 =
= 98 - 24√5 = 2(49 - 12√5)