Secondary III • 18d
comment résoudre (x+25)(x+15)=x exposant2-(-12-60x)
comment résoudre (x+25)(x+15)=x exposant2-(-12-60x)
Explanation verified by Alloprof
This Explanation was verified by a member of the Alloprof team.
(x+25)(x+15) = x² - (-12-60x)
on exécute les opérations
(x+25)(x+15) = x² + 12 + 60x
x² + 40x + 375 = x² + 12 + 60x
on regroupe les termes semblables (les x² s'annulent)
375 - 12 = 60x - 40x
.....
je te laisse continuer