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QUIZ
Réduire une expression littérale sans parenthèses
Question 1 :
$\,2 +\,4\times(\,-3\,x\,) \,-3 =$ ?
$\,-12\,x +\,5$ $\,-18\,x \,-3$ $\,12\,x \,-1$ $\,x \,-1$ $\,-12\,x \,-1$
Question 2 :
$\,2\times \,x \times \,4 + \,x \times (\,-3\,x\,) =$ ?
$\,5\,\,x^2$ $\,-3\,\,x^2 +\,8\,x$ $\,-3\,\,x^2 +\,6\,x$ $\,3\,\,x^2 +\,8\,x$ $\,-3\,\,x^2 \,-8\,x$
Question 3 :
$\,-8\,y \times (\,-9\,x\,) +\,6\,xy =$ ?
$\,66\,xy$ $\,-8\,y \,-9\,x +\,6\,xy$ $\,-11\,xy$ $\,78\,xy$ $\,-66\,xy$
Question 4 :
$\,4 +\,2\,x \,-5\,y +\,5\,x +\,7=$ ?
$\,7\,x \,-5\,y +\,11$ $\,7\,x \,-5\,y \,-3$ $\,2\,xy +\,11$ $\,-3\,x \,-5\,y +\,11$ $\,11\,x \,-5\,y +\,7$
Question 5 :
$\,-2\,x \,-7 \,-8\,x \,-3 \,-7\,x=$ ?
$\,-17\,x \,-10$ $\,-21\,x$ $\,-17\,x +\,4$ $\,-3\,x \,-10$ $\,-\,x +\,4$ $\,-27\,x$
Question 6 :
$\,8\,x \,-6\,y \,-7\,y \,-2\,x=$ ?
$\,10\,x \,-13\,y$ $\,2\,xy \,-9\,yx$ $\,6\,x \,-13\,y$ $\,6\,x \,-\,y$ $\,10\,x +\,y$
Question 7 :
$\,6\,x \,-4 \,-9\,x =$ ?
$\,6\,x \,-13\,x$ $\,15\,x \,-4$ $\,-3\,x \,-4$ $\,-15\,x \,-4$ $\,-7\,x$
Question 8 :
$\,8\,x +\,6\,\,x^2 \,-9 \,-8\,\,x^2 \,-7=$ ?
$\,-16\,\,x^2 +\,8\,x \,-2$ $\,14\,\,x^2 +\,8\,x \,-16$ $\,6\,\,x^2 \,-16$ $\,-14\,\,x^2 +\,8\,x +\,2$ $\,-2\,\,x^2 +\,8\,x \,-16$