Question

Срочно!!!!!!!!!!!!!!!!
y^2+7=8y

Answer 1

Ответ:

7;1

Объяснение:

$y^{2} +7=8y\\ y^{2} +7-8y=0\\y^{2} -8y+7=0$

$D=64-28=36\\\sqrt{36} =6$

$y1=\frac{8+6}{2} =7\\y2=\frac{8-6}{2} =1$