bonjour
a + b = 338 : 2 = 169
a = 169 - b
ab = 6 328
( 169 - b ) b - 6 328 = 0
- b² + 169 b - 6 328 = 0
Δ = 169 ² - 4 ( - 1 * - 6 328 ) = 28 561 - 25 312 = 3249 = 57 ²
x 1 = ( - 169 - 57 ) / - 2 = - 226 / - 2 = 113
x 2 = ( - 169 + 57 ) / - 2 = - 112 / -2 = 56
L = 113 et l = 56
