Réponses

2012-11-07T13:47:10+01:00

7x²-3x+5               7*(-10)²-3*(-10)+5

7*10²-3*10+5         700-30+5

700-30+5               675

675

 

2012-11-07T13:47:59+01:00

Quand x=10 7*10^2 -3*10 + 5 = 700-30+5= 675