Question

Create your own quadratic equation and demonstrate how it would be solved by graphing, factoring, the quadratic formula, and by completing the square

Answer 1

f(x) = -2(x-5)^2+5
its the canonical form

Answer 2

graphine = enter on calculator and find the intersection with the axis x

Answer 3

\[x1,x2 = (-b \pm \sqrt{b^2-4ac})/2a\]
a is -2, b = 20 c =-45
solve
normal formula of the same equation is -2x^2 +20x -45

Answer 4

square completion
-2x^2 +20x -45=0
x^2 -10x +45/2 = 0
continue