Question

10. Qual o conjunto solução da equação x2 – 36 = 0; a) {0, 6} b) {-6, 6}​

Answer 1

Resposta:

$x^2 - 36 = 0\\\\x^2-36+36=0+36\\\\x^2=36\\\\\mathrm{Para\:}x^2=f\left(a\right)\mathrm{\:as\:solucoes\:sao\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}\\\\x=\sqrt{36},\:x=-\sqrt{36}\\\\x=6\\\\\:x=-6\\\\S= 6, -6$