13)
[tex] \frac{9}{16 } - \frac{1}{144} {a}^{2} [/tex]
15)2,56
[tex]2.56{x}^{2} - \frac{225}{361} [/tex]
[tex] \frac{9}{16 } - \frac{1}{144} {a}^{2} [/tex]
15)2,56
[tex]2.56{x}^{2} - \frac{225}{361} [/tex]
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Answers & Comments
Ответ:
1. (а-7)(а+7)
3.
5. (8/9-х)(8/9+х)
7. (z-13/14)(z+13/14)
9. (5x-6)(5x+6)
11. (0,8-1/3z)(0,8+1/3z)