Question

Sloving a quadratic equation by formula method 2x-5x+2=0

Answer 1

Answer:

2x-5x= -2

-3x= -2

x= 2/3( minus cancel ❌)

Answer 2

Answer:

x  = 2

x = 1/2

Step-by-step explanation:

2x²-5x + 2 = 0

Δ=b²-4ac

Δ=(-5)² - 4.2.2=9

Δ > 0 =>

$x_{1} =\frac{-b+\sqrt{\triangle } }{2a} \\\\ x_{2} =\frac{-b-\sqrt{\triangle } }{2a}$

x₁ = $\frac{5+\sqrt{9} }{2.2} = 2$

x₂ = $\frac{5-\sqrt{9} }{2.2}$= 1/2