Finding vertex of a parabola

Question

Assignment:

Q1. Solve these quadratic equations by factoring

1. x²-4x+5 = 1

2. x²-10= -9

3.x²+8x+16 = 0

Quadratic graphs:

Locate vertex and 1 point on the left hand side and 1 point on the right hand side of the vertex for the following quadratic functions

 4. y = x²-2x+1

 5. y = x²-1

Provide complete and step by step solution for the question and show calculations and use formulas.