Question

calcule o valor de x nas figuras

Answer 1

a) ( x + 5 )² = ( x + 3 )² + 6²

x² + 10x + 25 = x² + 6x + 9 + 36

10x - 6x = 45 - 25

4x = 20

x = 20/4  → x = 5

b) ( 2x )²  = x² + ( 3√3 )²

4x² = x² + 27

4x² - x² = 27

3x² = 27

x² = 27/3

x = √9  →  x = 3

c) ( 3√5 )² = x² + 6²

45 = x² + 36

45 - 36 = x²

x = √9  →  x = 3