Ответ:
(3a-2)²-(3a+1)(a+5)
9a²-12a+4-(3a²+15a+a+5)
9a²-12a+4-(3a²+16a+5)
9a²-12a+4-3a²-16a-5
6a²-28a-1
[tex] {(3a - 2)}^{2} - (3a + 1)(a + 5) = {9a}^{2} - 12a + 4 - ( {3a}^{2} + 15a + a + 5) = {9a}^{2} - 12a + 4 - {3a}^{2} - 15a - a - 5 = {6a}^{2} - 28a - 1[/tex]
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Answers & Comments
Ответ:
(3a-2)²-(3a+1)(a+5)
9a²-12a+4-(3a²+15a+a+5)
9a²-12a+4-(3a²+16a+5)
9a²-12a+4-3a²-16a-5
6a²-28a-1
[tex] {(3a - 2)}^{2} - (3a + 1)(a + 5) = {9a}^{2} - 12a + 4 - ( {3a}^{2} + 15a + a + 5) = {9a}^{2} - 12a + 4 - {3a}^{2} - 15a - a - 5 = {6a}^{2} - 28a - 1[/tex]