SALAKYNADA
Answered

developper,reduire,et ordonner : f(x) = (2x-6)² - 2(3-x) (x+1) - 4(x²-9)

Sagot :

f(x) = (2x-6)² - 2(3-x) (x+1) - 4(x²-9)
f(x) = 2x² -28x+66