Explications étape par étape :
10 - 35x
= 5 * 2 - 5 *7x
= 5(2 - 7x)
7x + x²
= 7x + x * x
= x(7 + x)
-2x² + 6x
= -2 * x * x + 2 * 3x
= 2x(-x + 3)
-6x² - 18x + 3
= -3 * 2x² - 3 * 6x + 3 * 1
= 3(-2x² - 6x + 1)
4x^3 - 8x²
= 4 * x * x² - 4 * 2x²
= 4x²(x - 2)
