Question

a) x2-53x+570=0
resolva bhaskara​

Answer 1

Oi...

$x^2-53x+570=0\\\\Coeficientes:\;a=1,\;b=-53\;e\;c=570\\\\\Delta=b^2-4ac\\\Delta=-53^2-4\cdot1\cdot(570)\\\Delta=2809+2280\\\Delta=529\\\\x=\dfrac{-b\pm\sqrt{\Delta}}{2a}\\\\x=\dfrac{53\pm\sqrt{529}}{2\cdot1}\\\\x=\dfrac{53\pm23}{2}\\\\x_1=\dfrac{53+23}{2}=\dfrac{76}{2}=38\\\\x_2=\dfrac{53-23}{2}=\dfrac{30}{2}=15$

Espero ter ajudado.