Question

find the vertex and line of symmetry
f(x)=-x^2+10x+3

Answer 1

Vertex = (5, 28)

The line of sym is always equal to the x-cordinate,
x = 5

Answer 2

Determine the nature of the solutions 7t^2-9t=0

Answer 3

2 real

Answer 4

Solve by completing the square x^2+2x-3=0