Rumus abc ×²-2×-24=0

Rumus abc ×²-2×-24=0

Jawab:

rumus abc

$x^{2} - 2x - 24 = 0$

dengan

a = 1

b = -2

c = -24

rumus abc

$x_{12} = frac{-b± sqrt{b^{2} -4ac } }{2a} \x_{12} = frac{-(-2)± sqrt{(-2)^{2} -4(1)(-24) } }{2}\x_{12} = frac{2± sqrt{4 + 96 } }{2}\x_{12} = frac{2± sqrt{100 } }{2}\x_{1} = frac{2 + 10}{2} \x_{1} = frac{12}{2} = 6$

atau

$x_{2} = frac{2-10}{2} \x_{2} = frac{-8}{2} = -4$

sehingga x1 = 6 atau x2 = -4