Объяснение:
8.
[tex](3x - 5 {)}^{2} - 49 = 0[/tex]
(3х-5-7)(3х-5+7)=0
(3х-12)(3х+2)=0
3х-12=0 або 3х+2=0
х=4 х=-2/3
А),Б)
9.
[tex]0.09 - {x}^{128} = (0.3 - {x}^{64}) (0.3 + {x}^{64} )[/tex]
[tex]81 {y}^{98} - 121 {x}^{32} = (9 {y}^{49} - 11 {x}^{16} )(9 {y}^{49} + 11 {x}^{16} )[/tex]
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Answers & Comments
Объяснение:
8.
[tex](3x - 5 {)}^{2} - 49 = 0[/tex]
(3х-5-7)(3х-5+7)=0
(3х-12)(3х+2)=0
3х-12=0 або 3х+2=0
х=4 х=-2/3
А),Б)
9.
[tex]0.09 - {x}^{128} = (0.3 - {x}^{64}) (0.3 + {x}^{64} )[/tex]
[tex]81 {y}^{98} - 121 {x}^{32} = (9 {y}^{49} - 11 {x}^{16} )(9 {y}^{49} + 11 {x}^{16} )[/tex]