Temukan Syarat Numerusnya…..Mohon bantuannya Kaka kaka
Jawab:
1. Hp = { x = 1 atau x = -5}
2. Hp = { x = 8 atau x = }
3. x = 6
4. Hp ={ x = -8 atau x = 4 }
5. Hp = { x = 6 atau x = -2 }
Penjelasan dengan langkah-langkah:
1. ²㏒ ( x² +4x + 3) = 3
2³ = x² + 4x + 3
8 = x² + 4x + 3
x² + 4x – 5 = 0
(x + 5) (x – 1) = 0
x + 5 = 0 x – 1 = 0
x = -5 ∨ x = 1
Hp = { x = 1 atau x = -5}
2. ⁷㏒²x – 2 . ²㏒ x – 3 = 0
(⁷㏒x)² – 2 ²㏒x – 3 = 0
a² – 2a – 3 = 0
(a – 3) ( a + 1)
a – 3 = 0 a + 1 = 0
a = 3 ∨ a = -1
²㏒x = 3 ²㏒x = - 1
x = 2³ x = 2⁻¹
x = 8 x =
Hp = { x = 8 atau x = }
3. ˣ⁻¹㏒( 3x – 7) = ˣ⁻¹㏒(2x – 1)
3x – 7 = 2x – 1
x = 6
4. ⁷㏒(x² + 4x – 12) = ⁷㏒20
x² + 4x – 12 = 20
x² + 4x – 32 = 0
(x + 8 ) ( x – 4) = 0
x + 8 = 0 x – 4 = 0
x = – 8 ∨ x = 4
Hp ={ x = -8 atau x = 4 }
5. ˣ⁺²㏒ (x² – 3x – 4) = ˣ⁺²㏒(x + 8)
x² – 3x – 4 = x + 8
x² – 4x – 12 = 0
( x – 6) ( x + 2)
x – 6 =0 x + 2 = 0
x = 6 ∨ x = -2
Hp = { x = 6 atau x = -2 }
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