Question

13)
$\frac{9}{16 } - \frac{1}{144} {a}^{2}$
15)2,56
$2.56{x}^{2} - \frac{225}{361}$


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Answer 1

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)