Question

Find the vertex. f(x)=2^2 - 8​

Answer 1

(0, -√2)

Explanation:

Given :

• f(x) = x² - 8

Finding vertex :

• Given by (h, k)
• h = -b/2a = 0
• k = -D/4a
• D = √0 - 4(1)(-8) = √32 = 4√2
• k = -4√2/4 = -√2
• Vertex is (0, -√2)