Question 1: Calcule \(8x \times 5\).

\(40 + x\)
\(40x\)
\(40 - x\)

Question 2: Développe \(7x \times 5x\).

\(35x^2\)
\(12x\)
\(35x\)

Question 3: Développe \(5(8x + 2)\).

\(40x + 10\)
\(10x + 40\)
\(40x - 10\)

Question 4: Factorise \(15x + 10\).

\(5(3x + 2)\)
\(3(5x + 10)\)
\(10(1.5x + 1)\)

Question 5: Réduis l'expression \(7x + 3x + 1 + 5x + 8x + 14\).

\(23x + 15\)
\(20x + 14\)
\(15x + 23\)

Question 6: Développe \(4(8x - 3)\).

\(32x - 11\)
\(32x - 12\)
\(32x + 12\)

Question 7: Factorise \(x^2 - 2x\).

\(x(x - 2)\)
\(x^2 - 2\)
\(x(x + 2)\)

Question 8: Développe \(6(4x + 3)\).

\(24x + 18\)
\(18x + 24\)
\(24x - 18\)

Question 9: Réduis l'expression \(8x + 5y + 3x + 4y\).

\(11x + 8y\)
\(11x + 9y\)
\(8x + 9y\)

Question 10: Factorise \(15x + 10\).

\(5(3x + 2)\)
\(3(5x + 10)\)
\(10(1.5x + 1)\)