Question

Rezolvati ecuatia in R 2x²-9(x-1)=(x-3)

Answer 1

2x2-9x+9=x-3
2x2-9x-x+9+3=
2x2-10x+12=
delta=b la puterea a doua -4ac
delta=(-10)La puterea a doua -4*2*12
delta=100-96
delta=4 => radical din delta =2
$2 {}^{2}$