Question

помогитееее умоляюююю​

Answer 1

Ответ:

1) $4^{3}$=64

2) -32$x^{7}$$y^{7}$

3) 16 - 16p + $4p^{2}$

4) A

5) 4$m^{5} n^{6}$(9+7$m^{3}$)

6)(x-2)(x+13)-(x+5)(x-5)= -23

$x^{2}$ + 11x - 26 -

11x = 22

x = 2

7) $\left \{ {{2x - 5y = 12} \atop {4x + 5y = 24}} \right.$

$\left \{ {{2x = 12+5y} \atop {4x+5y=24}} \right.$

24+15y=24

15y = 0

y = 0

2x = 12

x = 6

Объяснение: