Question

-x2+6x-5=0 me ajude responder porfavor ​

Answer 1

a= -1, b= 6, c= -5.

Fórmula de Bhaskara

Δ= b² - 4 × a × c

Δ= 6² - 4 × (-1) × (-5)

Δ= 36 - 20

Δ= 16

X= – b ± √Δ ÷

       2 × a

X= –6 ± √16 ÷

        2 × (-1)

X= – 6± 4 ÷

       -2

x'= -6 + 4 ÷ -2

x'= -2 ÷ -2= 1

x"= -6 + -4 ÷ -2

x"= -10 ÷ -2 = 5