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50\times 10^{3}r^{2}=9\times 10^{9}\times 80\times 10^{66}\left(-6\right)\times 10^{-6}
A variable r non pode ser igual a 0 porque a división entre cero non está definida. Multiplica ambos lados da ecuación por r^{2}.
50\times 10^{3}r^{2}=9\times 10^{75}\times 80\left(-6\right)\times 10^{-6}
Para multiplicar potencias da mesma base, suma os seus expoñentes. Suma 9 e 66 para obter 75.
50\times 10^{3}r^{2}=9\times 10^{69}\times 80\left(-6\right)
Para multiplicar potencias da mesma base, suma os seus expoñentes. Suma 75 e -6 para obter 69.
50\times 1000r^{2}=9\times 10^{69}\times 80\left(-6\right)
Calcula 10 á potencia de 3 e obtén 1000.
50000r^{2}=9\times 10^{69}\times 80\left(-6\right)
Multiplica 50 e 1000 para obter 50000.
50000r^{2}=9\times 1000000000000000000000000000000000000000000000000000000000000000000000\times 80\left(-6\right)
Calcula 10 á potencia de 69 e obtén 1000000000000000000000000000000000000000000000000000000000000000000000.
50000r^{2}=9000000000000000000000000000000000000000000000000000000000000000000000\times 80\left(-6\right)
Multiplica 9 e 1000000000000000000000000000000000000000000000000000000000000000000000 para obter 9000000000000000000000000000000000000000000000000000000000000000000000.
50000r^{2}=720000000000000000000000000000000000000000000000000000000000000000000000\left(-6\right)
Multiplica 9000000000000000000000000000000000000000000000000000000000000000000000 e 80 para obter 720000000000000000000000000000000000000000000000000000000000000000000000.
50000r^{2}=-4320000000000000000000000000000000000000000000000000000000000000000000000
Multiplica 720000000000000000000000000000000000000000000000000000000000000000000000 e -6 para obter -4320000000000000000000000000000000000000000000000000000000000000000000000.
r^{2}=\frac{-4320000000000000000000000000000000000000000000000000000000000000000000000}{50000}
Divide ambos lados entre 50000.
r^{2}=-86400000000000000000000000000000000000000000000000000000000000000000
Divide -4320000000000000000000000000000000000000000000000000000000000000000000000 entre 50000 para obter -86400000000000000000000000000000000000000000000000000000000000000000.
r=2400000000000000000000000000000000\sqrt{15}i r=-2400000000000000000000000000000000\sqrt{15}i
A ecuación está resolta.
50\times 10^{3}r^{2}=9\times 10^{9}\times 80\times 10^{66}\left(-6\right)\times 10^{-6}
A variable r non pode ser igual a 0 porque a división entre cero non está definida. Multiplica ambos lados da ecuación por r^{2}.
50\times 10^{3}r^{2}=9\times 10^{75}\times 80\left(-6\right)\times 10^{-6}
Para multiplicar potencias da mesma base, suma os seus expoñentes. Suma 9 e 66 para obter 75.
50\times 10^{3}r^{2}=9\times 10^{69}\times 80\left(-6\right)
Para multiplicar potencias da mesma base, suma os seus expoñentes. Suma 75 e -6 para obter 69.
50\times 1000r^{2}=9\times 10^{69}\times 80\left(-6\right)
Calcula 10 á potencia de 3 e obtén 1000.
50000r^{2}=9\times 10^{69}\times 80\left(-6\right)
Multiplica 50 e 1000 para obter 50000.
50000r^{2}=9\times 1000000000000000000000000000000000000000000000000000000000000000000000\times 80\left(-6\right)
Calcula 10 á potencia de 69 e obtén 1000000000000000000000000000000000000000000000000000000000000000000000.
50000r^{2}=9000000000000000000000000000000000000000000000000000000000000000000000\times 80\left(-6\right)
Multiplica 9 e 1000000000000000000000000000000000000000000000000000000000000000000000 para obter 9000000000000000000000000000000000000000000000000000000000000000000000.
50000r^{2}=720000000000000000000000000000000000000000000000000000000000000000000000\left(-6\right)
Multiplica 9000000000000000000000000000000000000000000000000000000000000000000000 e 80 para obter 720000000000000000000000000000000000000000000000000000000000000000000000.
50000r^{2}=-4320000000000000000000000000000000000000000000000000000000000000000000000
Multiplica 720000000000000000000000000000000000000000000000000000000000000000000000 e -6 para obter -4320000000000000000000000000000000000000000000000000000000000000000000000.
50000r^{2}+4320000000000000000000000000000000000000000000000000000000000000000000000=0
Engadir 4320000000000000000000000000000000000000000000000000000000000000000000000 en ambos lados.
r=\frac{0±\sqrt{0^{2}-4\times 50000\times 4320000000000000000000000000000000000000000000000000000000000000000000000}}{2\times 50000}
Esta ecuación ten unha forma estándar: ax^{2}+bx+c=0. Substitúe a por 50000, b por 0 e c por 4320000000000000000000000000000000000000000000000000000000000000000000000 na fórmula cadrática, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
r=\frac{0±\sqrt{-4\times 50000\times 4320000000000000000000000000000000000000000000000000000000000000000000000}}{2\times 50000}
Eleva 0 ao cadrado.
r=\frac{0±\sqrt{-200000\times 4320000000000000000000000000000000000000000000000000000000000000000000000}}{2\times 50000}
Multiplica -4 por 50000.
r=\frac{0±\sqrt{-864000000000000000000000000000000000000000000000000000000000000000000000000000}}{2\times 50000}
Multiplica -200000 por 4320000000000000000000000000000000000000000000000000000000000000000000000.
r=\frac{0±240000000000000000000000000000000000000\sqrt{15}i}{2\times 50000}
Obtén a raíz cadrada de -864000000000000000000000000000000000000000000000000000000000000000000000000000.
r=\frac{0±240000000000000000000000000000000000000\sqrt{15}i}{100000}
Multiplica 2 por 50000.
r=2400000000000000000000000000000000\sqrt{15}i
Agora resolve a ecuación r=\frac{0±240000000000000000000000000000000000000\sqrt{15}i}{100000} se ± é máis.
r=-2400000000000000000000000000000000\sqrt{15}i
Agora resolve a ecuación r=\frac{0±240000000000000000000000000000000000000\sqrt{15}i}{100000} se ± é menos.
r=2400000000000000000000000000000000\sqrt{15}i r=-2400000000000000000000000000000000\sqrt{15}i
A ecuación está resolta.