Question

Find the roots and the vertex of the quadratic on a calculator. Round all values to 3 decimal places (if necessary).
y, equals, minus, x, squared, plus, 16, x, plus, 57
y=−x
2
+16x+57
Answer

Roots:
and

Vertex: left parenthesis(
,
right parenthesis)

Answer 1

Roots: -3 and 19

Vertex: (8, 121)