Question

x² + (2x)² = 50² resolva.

Answer 1

$x^{2} + (2x)^{2} = 50^{2} x^{2} + 4x^{2} = 50^{2} 5x^{2} = 2500 x^{2} = \frac{2500}{5} x = \sqrt{500} x = \sqrt{5 * 100} x = 10 \sqrt{5 }$