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QUIZ
Synthèse : Réduire une expression littérale
Question 1 :
$\,-1 \,-3\times\,2\,x +\,7 =$ ?
$\,6\,x +\,6$ $\,-\,x +\,6$ $\,-6\,x +\,6$ $\,-6\,x \,-8$ $\,-8\,x +\,7$
Question 2 :
$\,-4\,x \,-3 +\,x \,-9 \,-2\,x=$ ?
$\,-5\,x \,-12$ $\,-7\,x \,-6$ $\,-17\,x$ $\,-5\,x \,-6$ $\,-\,x \,-12$ $\,x$
Question 3 :
$ \,\,x^2 - ( \,5 + \,7\,\,x^2 + \,5\,x)=$ ?
$\,-6\,\,x^2 +\,5\,x \,-5$ $\,8\,\,x^2 +\,5\,x +\,5$ $\,8\,\,x^2 \,-5\,x \,-5$ $\,-6\,\,x^2 \,-5\,x \,-5$ $\,-6\,\,x^2 +\,5\,x +\,5$
Question 4 :
$\,-4\times \,x \times \,7 + \,x \times (\,-9\,x\,) =$ ?
$\,-9\,\,x^2 +\,3\,x$ $\,9\,\,x^2 \,-28\,x$ $\,-9\,\,x^2 +\,28\,x$ $\,-37\,\,x^2$ $\,-9\,\,x^2 \,-28\,x$
Question 5 :
$\,-3\,x +\,4\,y +\,9\,y +\,8\,x=$ ?
$\,5\,x +\,5\,y$ $\,-11\,x +\,13\,y$ $\,xy +\,17\,yx$ $\,5\,x +\,13\,y$ $\,-11\,x \,-5\,y$
Question 6 :
$\,5 + ( - \,6\,x + \,8) - ( \,2 - \,3\,x) =$ ?
$\,3\,x +\,5$ $\,-3\,x +\,15$ $\,-3\,x +\,11$ $\,-3\,x \,-5$ $\,-9\,x +\,11$
Question 7 :
$\,6\,x - ( - \,\,x^2 - \,2 ) + \,4\,x=$ ?
$\,\,x^2 +\,2\,x +\,2$ $\,-\,\,x^2 +\,10\,x \,-2$ $\,-\,\,x^2 +\,10\,x +\,2$ $\,\,x^2 +\,10\,x \,-2$ $\,\,x^2 +\,10\,x +\,2$
Question 8 :
$\,7\,x +\,7\,\,x^2 \,-8 +\,5\,\,x^2 \,-4=$ ?
$\,-2\,\,x^2 +\,7\,x +\,4$ $\,12\,\,x^2 +\,7\,x +\,4$ $\,19\,\,x^2 \,-12$ $\,12\,\,x^2 +\,7\,x \,-12$ $\,-12\,\,x^2 +\,7\,x +\,12$
Question 9 :
$ \,3\,x + \,2\,y - ( \,6\,x - \,8\,y)=$ ?
$\,9\,x \,-6\,y$ $\,-3\,x \,-6\,y$ $\,-3\,x +\,10\,y$ $\,-3\,x +\,6\,y$ $\,9\,x +\,10\,y$
Question 10 :
$\,2\,x + (\,9 - \,5\,x + \,4\,y) =$ ?
$\,3\,x +\,4\,y \,-9$ $\,-3\,x +\,4\,y +\,9$ $\,7\,x +\,4\,y +\,9$ $\,7\,x \,-4\,y \,-9$ $\,-3\,x \,-4\,y +\,9$