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QUIZ
Réduire une expression sans parenthèses (QCM)
Question 1 :
$\,-8\times \,x \times (\,-3\,) + \,x \times \,4\,x =$ ?
$\,4\,\,x^2 +\,24\,x$ $\,4\,\,x^2 \,-11\,x$ $\,-4\,\,x^2 +\,24\,x$ $\,28\,\,x^2$ $\,4\,\,x^2 \,-24\,x$
Question 2 :
$\,-5 +\,7\,x +\,4\,y +\,5\,x +\,4=$ ?
$\,7\,x +\,4\,y +\,4$ $\,12\,x \,-4\,y \,-1$ $\,12\,x +\,4\,y \,-9$ $\,16\,xy \,-1$ $\,12\,x +\,4\,y \,-1$
Question 3 :
$\,-\,x \,-8 \,-8\,x =$ ?
$\,-17\,x$ $\,7\,x \,-8$ $\,-\,x \,-16\,x$ $\,-9\,x \,-8$ $\,-7\,x \,-8$
Question 4 :
$\,-9 +\,6\times\,3\,x \,-3 =$ ?
$\,18\,x \,-6$ $\,18\,x \,-12$ $\,-9\,x \,-3$ $\,-18\,x \,-12$ $\,9\,x \,-12$
Question 5 :
$\,-2\,y \times \,2\,x +\,9\,xy =$ ?
$\,9\,xy$ $\,-2\,y +\,2\,x +\,9\,xy$ $\,-13\,xy$ $\,13\,xy$ $\,5\,xy$
Question 6 :
$\,x \,-3\,\,x^2 \,-2 \,-4\,\,x^2 \,-8=$ ?
$\,-7\,\,x^2 +\,x \,-6$ $\,-10\,\,x^2 +\,x \,-7$ $\,-7\,\,x^2 +\,x \,-10$ $\,-\,\,x^2 +\,x \,-6$ $\,-6\,\,x^2 \,-10$
Question 7 :
$\,3\,x +\,2 \,-5\,x +\,9 \,-5\,x=$ ?
$\,3\,x +\,11$ $\,-14\,x$ $\,3\,x +\,7$ $\,-7\,x +\,11$ $\,4\,x$ $\,-7\,x +\,7$
Question 8 :
$\,x \,-9\,y +\,8\,y \,-4\,x=$ ?
$\,5\,x \,-17\,y$ $\,-3\,x \,-\,y$ $\,-8\,xy +\,4\,yx$ $\,-3\,x +\,17\,y$ $\,5\,x \,-\,y$