Question

Решите, пожалуйста квадратное уравнение 3x²-124x-84=0

Answer 1

[tex]3 {x}^{2} - 124x - 84 = 0 \ d = 15376 + 4 times 3 times 84 = 16384 \ x1 = frac{124 - 128}{6} = - frac{4}{6} = - frac{2}{3} \ x2 = frac{124 + 128}{6} = frac{252}{6} = 42

Answer 2

124+128=252, а не 352

Answer 3

Д= -124^2 - 4ас= 15 376 + 1008= 128^2

Х1= -b-128/2a=124-128/6 = -4/6=-2/3

X2=124+128/6= 42