Question

determine as raízes reais x elevado a dois - 100=0

Answer 1

X^2-100=0
X^2=100
X=raiz quadrada de100
X=+ou-100
S={-100,100}

Answer 2

x² - 100= 0

x²= 100

x= ± √100

x= ± 10

S= ( 10 , - 10)