Question

выделить полный квадрат х^2+8х+17

Answer 1

x*2+8x+17=x*2+2×4x+16+1=(x+4)*2 +1

Answer 2

$x^2pm px+q=(xpm frac{p}{2})^2-(frac{p}{2})^2+q\\\x^2+8x+17=(x+frac{8}{2})^2-(frac{8}{2})^2+17=(x+4)^2-16+17=(x+4)^2+1$

Answer 3

описка...=((x+/-p/2)^2-(p/2)^2+q