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Zastosować odpowiednie wzory :)
Będzie naj.
..... =( √6t )² - ( √7w )² = 6t² - 7w²
.... = (4t + 12)(4t - 12) = ( 4t )² - 12² = 16t² - 144
(√6t + √7w)(√6t -√7w) =(√6t)² - (√7w)² = 6t² - 7w²
(12+4t)(4t-12) = (4t+12)(4t-12) = (4t)² - 12² = 16t² - 144
(a-b)(a+b)=a²-b²
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..... =( √6t )² - ( √7w )² = 6t² - 7w²
.... = (4t + 12)(4t - 12) = ( 4t )² - 12² = 16t² - 144
(√6t + √7w)(√6t -√7w) =(√6t)² - (√7w)² = 6t² - 7w²
(12+4t)(4t-12) = (4t+12)(4t-12) = (4t)² - 12² = 16t² - 144
(a-b)(a+b)=a²-b²