y=X^2+cx+d the turning point is (3,7) work out the values of c and d.https://www.vle.mathswatch.com/images/questions/question15588.png

Question

please answer it I m stuck in this question.

Answer 1

You reposted this, after correction.

Here's what I answered, on the earlier posting:

 

The turning point is the vertex; we have a formula for x coordinate of vertex:
x_vertex =-b/(2a).   NB: a = 1, b = c.

Apparently this equals 3, and when x=3, y = 7.

Does this give you two equations in two unknowns (c & d).. SOLVABLE! Go to it.

 

DID YOU EVEN READ THIS AND TRY??

Answer 2

Vertex form:

y = (x - 3)² + 7

y = x² - 6x + 9 + 7

 

Can you determine the value of c and d?