Question

срочно помогите решить 15 балов даю!!!!!!

Answer 1

Ответ:

$1)\ \ y=x^2-10x+24\\\\x^2-10x+24=(x-5)^2-25+24=(x-5)^2-1\\\\y=(x-5)^2-1\\\\\\2)\ \ y=x^2+8x+7\\\\x^2+8x+7=(x+4)^2-16+7=(x+4)^2-9\\\\y=(x+4)^2-9\\\\\\3)\ \ y=x^2-4x\\\\x^2-4x=(x-2)^2-4\\\\y=(x-2)^2-4\\\\\\4)\ \ y=x^2-6x+5\\\\x^2-6x+5=(x-3)^2-9+5=(x-3)^2-4\\\\y=(x-3)^2-4\\\\\\\star \ \ x^2\pm px+q=\Big(x-\dfrac{p}{2}\Big)^2-\Big(\dfrac{p}{2}\Big)^2+q\ \ \star$