Respuesta:seria 3
Explicación paso a paso:
Respuesta:
x=1
[tex]\left(5x-2\right)^2\:=\left(2x-5\right)^2\\\\25x^2-20x+4=4x^2-20x+25\\\\25x^2-20x+4-4=4x^2-20x+25-4\\\\25x^2-20x=4x^2-20x+21\\\\25x^2-20x+20x=4x^2-20x+21+20x\\\\25x^2=4x^2+21\\\\25x^2-4x^2=4x^2+21-4x^2\\\\21x^2=21\\\\\frac{21x^2}{21}=\frac{21}{21}\\\\x^2=1\\\\x=1[/tex]
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Respuesta:seria 3
Explicación paso a paso:
Respuesta:
x=1
Explicación paso a paso:
[tex]\left(5x-2\right)^2\:=\left(2x-5\right)^2\\\\25x^2-20x+4=4x^2-20x+25\\\\25x^2-20x+4-4=4x^2-20x+25-4\\\\25x^2-20x=4x^2-20x+21\\\\25x^2-20x+20x=4x^2-20x+21+20x\\\\25x^2=4x^2+21\\\\25x^2-4x^2=4x^2+21-4x^2\\\\21x^2=21\\\\\frac{21x^2}{21}=\frac{21}{21}\\\\x^2=1\\\\x=1[/tex]