Question

Determine o valor de x em cada caso

Answer 1

A)
$x { }^{2} = 3 { }^{2} + 4 {}^{2} \\ x {}^{2} = 25 \\ \sqrt{x } = \sqrt{25} \\ x = 5$
B)
$10 {}^{2} = {x}^{2} + {x}^{2} \\ 100 = 2 {x}^{2} \\ {x}^{2} = 100 \div 2 \\ \sqrt{ {x}^{2} } = \sqrt{50 } \\ x = 25 \sqrt{2}$