(a + 2)*(a - 2) = a² - 4
(a - 3)² = a² - 6a + 9
(a² - 4) - (a² - 6a + 9) = a² - 4 - a² + 6a - 9 = 6a - 13
pronto
vamos la
(a+2)(a-2) - (a-3)²
(a²-4) -( a²-6a+9)
6a-13 okkkkkk
a²-4-(a²-6a+9)=
6a-13
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Verified answer
(a + 2)*(a - 2) = a² - 4
(a - 3)² = a² - 6a + 9
(a² - 4) - (a² - 6a + 9) = a² - 4 - a² + 6a - 9 = 6a - 13
pronto
vamos la
(a+2)(a-2) - (a-3)²
(a²-4) -( a²-6a+9)
6a-13 okkkkkk
a²-4-(a²-6a+9)=
6a-13