How do you find the discriminant and how many and what type of solutions does $- 20 x^{2} + 3 x - 1 = 0$ $-20x^2+3x-1=0$ have?

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How do you find the discriminant and how many and what type of solutions does $- 20 x^{2} + 3 x - 1 = 0$ $-20x^2+3x-1=0$ have?

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Answer 1 · 2015-05-18T18:19:52

A tua equação pode ser escrita na forma:
$a x^{2} + b x + c = 0$ $ax^2+bx+c=0$
onde no teu caso:
$a = - 20$ $a=-20$
$b = 3$ $b=3$
$c = - 1$ $c=-1$
O discriminante pode ser calculado como;
$Delta=b^2-4ac=9-4(-20*-1)=-71$
Neste caso $Delta<0$ assim você terá duas soluções Complexas (e conjugadas).
Utilizando a formula de Bhaskara você vai achar duas soluções que contêm a unidade imaginaria $i=sqrt(-1)$ .

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How do you find the discriminant and how many and what type of solutions does $- 20 x^{2} + 3 x - 1 = 0$ $-20x^2+3x-1=0$ have?

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How do you find the discriminant and how many and what type of solutions does -20x^2+3x-1=0−20x2+3x−1=0-20x^2+3x-1=0 have?

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How do you find the discriminant and how many and what type of solutions does $- 20 x^{2} + 3 x - 1 = 0$ $-20x^2+3x-1=0$ have?