bonjour
A = 5(8w² +6w-1) - ( 7-5w)(4w-1)
A = 40 w² + 30 w - 5 - ( 28 w - 7 - 20 w² + 5 w )
A = 40 w² + 30 w - 5 - 28 w + 7 + 20w² - 5w
A = 60 w² - 3 w + 2
B= 8q² – (7q-9)(2-q) + (3-4q)(5+4q) – 14q²
B = 8 q² - ( 14 q - 7 q² - 18 + 9 q) + 15 + 12 q - 20 q - 16 q² - 14 q²
B = 8 q² + 7 q² - 23 q + 18 + 15 - 8 q - 30 q²
B = - 15 q² - 31 q + 33
