Question

Решение уравнения
x^2 -7x +12 = 0

Answer 1

х^2-7x+12=0
D=7^2-4*1*12=49-48=1
x1=(7+1)/2=4
x2=(7-1)/2=3

Answer 2

$D = b^{2} - 4ac = (-7)^{2} - 4*1*12 = 49 - 48 = 1;  [tex] x_{1,2} = \frac{-b +- \sqrt{D} }{2a}; x_{1} = 4; x_{2} = 3$