Question

Resultado de : 2x²-5x+2=0

Answer 1

2x² - 5x + 2 = 0
Δ = 25 - 16
Δ = 9
$x = \frac{5 \pm 3}{4} \\ \\ x' = \frac{5+3}{4} = 2 \\ \\ x'' = \frac{5-3}{4} = \frac{1}{2}$

Answer 2

 2x²-5x+2=0
a=2
b=-5
c=2 
Δ=b²-4*a*c
(-5²)-4*2*2
25-16
=9
x1=-(-5)+3/2*2
=8/2
x1=4

x2=-(-5)-3/2*2
x2=2/4