Question

Tolong dibantu penyelesaiannya

Answer 1

Penjelasan:

eksponen

[tex] {m}^{0} = 1[/tex]

[tex] {m}^{f(x)} = {m}^{g(x)} \to \: f(x) = g(x) \\ [/tex]

[tex](121) {}^{ {x}^{2} - 4x - 21 } = 1 \\ (121) {}^{ {x}^{2} - 4x - 21} = (121) {}^{0} \\ {x}^{2} - 4x - 21 = 0 \\ (x - 7)(x + 3) = 0[/tex]

solusi nilai x yang memenuhi:

[tex]x - 7 = 0 \\ x_{1} = 7 \:[/tex]

dan

[tex]x + 3 = 0 \\ x_{2} = - 3[/tex]

[tex]HP = - 3 \: , \: 7[/tex]