Réponses

2014-03-22T15:44:49+01:00
-6²+19x²+10= (3x-2)(-2x+5)
-6
²+19x²+10=-6x²+15x+4x-10
19x²+6x²-19x+10-36=0
25x²-19x-26=0

Δ=19²-4x25x-26
Δ=361+2600
Δ=2961
√Δ=√2961=3√329

x=19+3√329/50   et x'=19-3√329/50
x=