Question

Mutimea solutiilor ecuatiei x la patrat- 7x+12=0 este...

Answer 1

$x^{2}$-7x+12=0
Δ=49-48=1
$x_{1}$=$\frac{7+1}{2}$=4
$x_{2}$=$\frac{7-1}{2}$=3

S={3;4}