Question

An expression is given: x^2-8x+21.

Determine and classify the vertex of the expression.

Determine the values of h and k that make the expression 〖(x-h)〗^2+k equivalent to the given expression.

Answer 1

in y = a(x – h)^2 + k form vertex of the parabola is (h, k)

Answer 2

convert x^2-8x+21 to this form