Question

The minimum point of a quadratic

graph in the form y = x2 + ax + b is
(−2, −10).
Find a and b.

Answer 1

x² + 4x - 6

Explanation:

→ Write coordinates in completed square form

( x + 2 )² - 10

→ Expand out

x² + 4x + 4 - 10

→ Simplify

x² + 4x - 6