Question

$x^{2} -10 x+16=0$

Answer 1

$D=b^{2} -4ac=(-10)^{2} -4*1*16=100-64=36$
$sqrt{D} = sqrt{36} =6$
$x_{1} = frac{10+6}{2} = frac{16}{2} =8$
$x_{2} = frac{10-6}{2} = frac{4}{2} =2$
Ответ:8;2