Вправа 175 алгебра Бевз гдз 7 клас

№ 175

а) 3х² • х⁵ + 3 = 0              б) –2у⁴ • у⁷ = 2
3х⁷ + 3 = 0                           у¹¹ = –1
3х⁷ = –3                                y = –1;
х⁷ = –1
x = –1;

в) (2x)⁵ = –32                     г) (х⁹ • х⁴)³ = –1
32х⁵ = –32                           (х¹³)³ = –1
х⁵ = –1                                  х³⁹ = –1
х = 1;                                     х = –1.