6x²-49 svp 8x-5-(8x+1)(8x-5) please
Mathématiques
lola133
Question
6x²-49 svp
8x-5-(8x+1)(8x-5)
please
8x-5-(8x+1)(8x-5)
please
2 Réponse
-
1. Réponse Anonyme
6x² - 49
= (√6x)² - 7²
= (√6x - 7)(√6x + 7)
8x - 5 - (8x + 1)(8x - 5)
= (8x - 5) - (8x + 1)(8x - 5)
= (8x - 5)(1 - 8x - 1)
= 8x(8x - 5) -
2. Réponse nonotata
je suppose que tu dois factoriser donc
6x²-49 = (V6x)² -7² =(V6x -7)(V6x+7)
8x-5-(8x+1)(8x-5)
(8x-5)(1-8x-1)
(8x-5)(-8x)
-8x(8x-5)