Week 9 – Quadratic equation to standard form

The well-known quadratic equation $ax^2+bx+c$ is defined to other equations. If it is

eligible to factor into two linear equation, It is easy to factor than just putting in

quadratic equation. Another thing is change $ax^2+bx+c$ to perfect square form which is

$ a(x-b)^2 +c $. It is useful to find vertex and y-intercept. In perfect square equation of

quadratic equation, the vertex is (b,c) and y-intercept of the equation is (0,c). Although,

factor equation is good for finding x-intercept because factoring means finding x values and

it relates to x-intercept. In conclusion, quadratic $ax^2+bx+c$ is changeable to other

equations. We should know how to change and write with other equations.