Question

calcule o valor de X​

Answer 1

Vamos aplicar o teorema de Pitágoras para determinar o valor de y, e posteriormente para o valor de x.

$10^2=y^2+2^2\\\\100=y^2+4\\\\y^2+4=100\\\\y^2=100-4\\\\y^2=96\\\\y=\sqrt{96}$                 $x^2=y^2+(2+8)^2\\\\x^2=y^2+10^2\\\\x^2=96+100\\\\x^2=196\\\\x=\sqrt{196}\\\\x=14$