Pliss bantuin dongg!!! Besok dikumpul
Matematika
wandakhafifah0610
Pertanyaan
Pliss bantuin dongg!!! Besok dikumpul
1 Jawaban
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1. Jawaban jpallo
1) 5ˣ⁺¹ = 25√5 ===> 5ˣ⁺¹ = (5²) x 5¹/²
5ˣ⁺¹ = 5⁵/²
x + 1 = 5/2 ===> x = 3/2
2) 8⁴ˣ = 1/2√2 ===> (2³)⁴ˣ = 2⁻³/²
2¹²ˣ = 2⁻³/²
12x = -3/2
x = -3/2 : 12
x = -3/24 ===> x = -1/8
3) √(3²ˣ⁻³) = 9ˣ⁻¹ ===> 3⁽²ˣ⁻³⁾/² = 3²ˣ⁻²
(2x - 3)/2 = 2x - 2
2x - 3 = 4x - 4
-2x = -1
-x = -1/2 ===> x = 1/2
4) 25ˣ⁺² = (0,2)¹⁻ˣ ===> 5²ˣ⁻⁴ = 5⁻⁽¹⁻ˣ⁾
2x - 4 = x - 1
x = 3
5) 7ˣ²⁺ˣ⁻⁶ = (1/49)ˣ⁻² ===> 7ˣ²⁺ˣ⁻⁶ = 7⁻²ˣ⁺⁴
x² + x - 6 = -2x + 4
x² + x - 6 + 2x - 4 = 0
x² + 3x - 10 = 0
dgn menggunakan rumus abc, kita akan peroleh
x = -5 dan x = 2
semoga jelas dan membantu ya