Jawaban:
x²+x-20
Penjelasan dengan langkah-langkah:
(x-(-5)) (x-(+4))
(x+5) (x-4)
x²-4x+5x-20
persamaan kuadrat
[tex] x_{1} = - 5 \: dan \: x_{2} = 4[/tex]
[tex] {x}^{2} - ( x_{1} + x_{2})x + x_{1} \: . \: x_{2} = 0 \\ {x}^{2} - ( - 5 + 4) x + ( - 5)( 4) = 0 \\ {x}^{2} - ( - 1)x + ( - 20) = 0 \\ {x}^{2} + x - 20 = 0[/tex]
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Jawaban:
x²+x-20
Penjelasan dengan langkah-langkah:
(x-(-5)) (x-(+4))
(x+5) (x-4)
x²-4x+5x-20
x²+x-20
Jawaban:
persamaan kuadrat
[tex] x_{1} = - 5 \: dan \: x_{2} = 4[/tex]
[tex] {x}^{2} - ( x_{1} + x_{2})x + x_{1} \: . \: x_{2} = 0 \\ {x}^{2} - ( - 5 + 4) x + ( - 5)( 4) = 0 \\ {x}^{2} - ( - 1)x + ( - 20) = 0 \\ {x}^{2} + x - 20 = 0[/tex]