Jawaban:
x= -4/5 atau x= 1
Penjelasan dengan langkah-langkah:
5x²-x-4=0
5x²-x= 4
x²-1/5x= 4/5
x²-1/5x+1/100= 4/5+1/100
(x-1/10)²= 81/100
x-1/10= 9/10 atau -9/10
x= 1 atau x= -8/10
5x² - x - 4 = 0
a = 5, b = -1, dan c = -4
Melengkapi kuadrat sempurna
x1,2 = -b/2a ± √(-c/a + (-b/2a)²)
x1,2 = 1/10 ± √(4/5 + (1/10)²)
x1,2 = 1/10 ± √(4/5 + 1/100)
x1,2 = 1/10 ± √(80/100 + 1/100)
x1,2 = 1/10 ± √(81/100)
x1,2 = 1/10 ± 9/10
• x1 = 1/10 - 9/10 = -8/10 = -4/5
• x2 = 1/10 + 9/10 = 10/10 = 1
Jadi, HP = {-4/5, 1}
Semoga Bermanfaat
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
Jawaban:
x= -4/5 atau x= 1
Penjelasan dengan langkah-langkah:
5x²-x-4=0
5x²-x= 4
x²-1/5x= 4/5
x²-1/5x+1/100= 4/5+1/100
(x-1/10)²= 81/100
x-1/10= 9/10 atau -9/10
x= 1 atau x= -8/10
Penjelasan dengan langkah-langkah:
5x² - x - 4 = 0
a = 5, b = -1, dan c = -4
Melengkapi kuadrat sempurna
x1,2 = -b/2a ± √(-c/a + (-b/2a)²)
x1,2 = 1/10 ± √(4/5 + (1/10)²)
x1,2 = 1/10 ± √(4/5 + 1/100)
x1,2 = 1/10 ± √(80/100 + 1/100)
x1,2 = 1/10 ± √(81/100)
x1,2 = 1/10 ± 9/10
• x1 = 1/10 - 9/10 = -8/10 = -4/5
• x2 = 1/10 + 9/10 = 10/10 = 1
Jadi, HP = {-4/5, 1}
Semoga Bermanfaat