Question

qual o resultado dessa equaçao x2 3x-10=0

Answer 1

x^2 +3x -10 = 0 a= 1. b= 3 c= -10
Delta = 9 -4*1*-10 D = 9 -4-10 D = 9 +40 D = 49

x' = -(+3) +7/2 x' = 4/2 x= 2
x'' = -3-7/2 x'' = -10/2 x'' = -5
S = {2, -5}

Answer 2

x² + 3x - 10 =0

Δ = 3² - 4.-10.1
Δ=9 +40
Δ=49

x = -3 +/- √49
     ---------------
               2

x1 = -3 + 7
         --------- ⇒ 2
             2

x2 = -3 -7
        -------- ⇒ -5
             2

S={-5;2}