Question

Determine oX, Teorema de Pitagoras

Answer 1

20² = (3x)² + (4x)²

400 = 9x² + 16x²

25x² = 400

x² = 400/25

x = √16

x = 4

Answer 2

3x^2 + 4x^2 = 20^2

9x^2 + 16x^2 = 400

25x^2 = 400

x^2=16

x=4