Tu as compris pour les équations ?
Quelques exemples de factorisation:
4x
2 – 25 = (2x - 5)(2x + 5)
3x
3 + 6x
2 – 9x = 3x(x
2 + 2x – 3)
x
2 + 6x + 8 = (x + 2)(x + 4)
Quelques exercices de factorisation:
(2x%20+%203)%20-%20(x%20-%201)(2%20-%20x)\\(2x%20+%201)^2%20+%20(2x%20+%201)(x%20+%203)\\(5x%20-%202)(2x%20+%207)%20-%20(5x%20-%202)%20\\7x%20-%2049%20+%2014x^2\\9x^2%20+%2012x%20+%204\\(2x%20-%207)(x%20+%204)%20-%20(2x%20-%207)(4x%20+%201)\\(4x%20-%201)^2%20+%20(2x%20-%205)(4x%20-%201)\\(x%20+%207)(3x%20-%201)%20+%207x%20+%2049\\16x^2%20-%2081\\49x^2%20-%20\frac14%20\\9x^2%20+%2030x%20+%2025\\(2x%20+%203)^2%20-%2049\\(4x%20-%201)^2%20-%20(2x%20+%203)^2\\x^3%20-%2016x\\25x^2%20-%201%20-%20(4x%20-%203)(5x%20+%201)\\x^2%20+%208x%20+%2016\\4x^2%20-%204x%20+%201\\x^2%20-%2064\\x^2%20+%20x%20+%200,25\\100x^2%20-%201\,000x%20+%202\,500\\16x^2%20-%20\frac{81}{4}%20\\%20x^2%20-%207\\2x^2%20+%202%20\\(3x%20-%201)^2%20-%20(x%20+%202)^2)
C'est le genre de chose qui nécessite de l'entrainement.