1) 0,7×(-0,3)/0,7+(-0,3)=-0,21/0,4 = -0, 525
2) 33/37
M=8/-4=-2
n=y(-2)=-8+16-9=-1
Ответ: 3 четверть
0.4^(x^2-1) > 1--->0.4^(x^2)>0.4---->x^2=1---->-1<x<1
6x^2 - 14x + 15x - 35 + 4x^2 - 1 = 10x^2 - 25x + 6x - 15
10x^2 + x - 36 = 10x^2 - 19x - 15
x - 36 = - 19x - 15
x + 19x = 36 - 15
20x = 21
x = 21/20 = 1,05