Question

Me ajudem, por favor,é para entregar de madrugada!!!
F(x)=0

Answer 1

Resposta:

Explicação passo-a-passo:

$f(x)=2x^{2}-1\\\\f(x)=0\\\\2x^{2}-1=0\\\\2x^{2}=1\\\\x^{2}=\dfrac{1}{2}\\\\x=\pm\sqrt{\dfrac{1}{2}}\\\\\\x=\pm\dfrac{\sqrt{1}}{\sqrt{2}}\\\\\\x=\pm\dfrac{1}{\sqrt{2}}\\\\\\Racionalizando\\\\x=\pm\dfrac{1}{\sqrt{2}}.\dfrac{\sqrt{2}}{\sqrt{2}}\\\\\\x=\pm\dfrac{\sqrt{2}}{2}$

Answer 2

Resposta:

F(x)= 2x²-1=0

F(x)= 2x²=1

F(x)= x²= 1/2

F(xl= x= √1/2

Espero ter ajudado

Bons estudos!!