bonjour
a. 5 * ( 3 y + 2 ) = 5 * 3y + 5 *2 = 15 y + 10
b . 4 * ( 3 x - 2 ) = 4 * 3 x + 4 * - 2 = 12 x - 8
c. ( 5 - 4 x ) * x = 5 * x - 4 x * x = 5 x - 4 x²
