Question

darivatin of quadratic equation

Answer 1

The derivative of the quadratic equation ax^2 +bx +c is
2ax + b

Answer 2

how quadratic equation is derived?

Answer 3

http://www.mathsisfun.com/algebra/quadratic-equation-derivation.html

Answer 4

complete the square

Answer 5

\[ax^2 + bx+c = 0\]\[x^2 + \frac{b}{a}x+\frac{c}{a}\]\[ (x + \frac{b}{2a})^2+\frac{c}{a} - \frac{b^2}{4a^2} = 0\]

Answer 6

\[ (x + \frac{b}{2a})^2 = - \frac{c}{a} +\frac{b^2}{4a^2} \]

Answer 7

can you finish?

Answer 8

yes...but an other question

Answer 9

that why we break the middle term when solving by the completing square form?

Answer 10

its because when we expand: \[(x+k)^2 = x^2 + 2kx + k^2\]

we have to split the middle term to get the squared form

Answer 11

thank you......eigenschmeigen....