Question

(x-2)(x+2)-x(x-13) при x = -2/13

Answer 1

$x { }^{2} - 4 - x {}^{2} + 13x \ - 4 + 13x \ times = - frac{2}{13 } \ 13 times ( - frac{2}{13}) = - 2 - 4 = - 6$

Answer 2

Я первый был!

Answer 3

и что

Answer 4

$x ^2 - 4 - x ^{2} + 13x \ - 4 + 13x \ - 4 + 13 times - frac{2}{13} \ = - 6$