Question

determine as raizes da equação biquadrada

x²-5x²+4=0

Me ajudem por favor!!! ​

Answer 1

$x^2-5x^2+4=0\\\\x^2-5x^2+4-4=0-4\\\\x^2-5x^2=-4\\\\-4x^2=-4\\\\\\\frac{-4x^2}{-4}=\frac{-4}{-4}\\\\\\Simplificar\\x^2=1\\\\x=\sqrt{1},\:x=-\sqrt{1}\\\\\sqrt{1}=1\\\\-\sqrt{1}=-1\\\\x=1,\:x=-1$