Question

Rezolvati please .... dau cel mai bun raspuns
2x²+x-6=0
3x²+4x-4=0
7-6x-9x²=8
2(x-1)²=3x+2
(x-2)(x+3)=24
(x-3)(x+2)=14

Answer 1

a=2 b=1 C= -6 Delta= b2 - 4ac=1-4*2*(-6)=49 X1/2= -b+-√Delta/2a= -1+-√49/2*2=-1+-7/4 = x1=-1-7/4=-2 X2=-1+7/4=3/2 Asa se fac toate