Answer:
turning point = (- 2, - 7 )
Explanation:
the vertex form of a parabola is
y = a(x - h)² + k
where (h, k ) are the coordinates of the turning point ( vertex) and a is a multiplier.
given
y = x² + 4x - 3
to complete the square
add/ subtract ( half the coefficient of the x- term)² to x² + 4x
y = x² + 2(2)x + 4 - 4 - 3
y = (x + 2)² - 7 ← in vertex form
with turning point (- 2, - 7 )