2006-12-18 03:38:48 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
A quadratic equation has the form y = ax² + bx + c, where a,b,c are real numbers. Its graph is a parabola.
2006-12-18 03:41:44 · answer #1 · answered by Philo 7 · 2⤊ 1⤋
A quadratic equation is a function that graphs a parabola.
The standard form is ax^2+bx+c
As you can see the highest exponential value is 2. Equations that have the highest exponent as a 2 are quadratic.
2006-12-18 03:56:54 · answer #2 · answered by Mathman90 2 · 1⤊ 0⤋
A quadratic equation is a 2nd degree polynomial:
ax^2 + bx + c = 0 where a, b, and c are coefficients.
The quadratic formula is used to solve for x based on the coefficients of the equation.
[-b +- sqrt(b^2 - 4ac)]/2a
Check out wikipedia for better formatting:
http://en.wikipedia.org/wiki/Quadratic_Equation
2006-12-18 03:43:22 · answer #3 · answered by dgbaley27 3 · 1⤊ 1⤋
A quadratic equation is an equation of the form:
y = ax^2 + bx + c, for constants a, b, and c.
One of the main characteristics of a quadratic equation is that the highest power of x is 2.
2006-12-18 03:42:23 · answer #4 · answered by Puggy 7 · 2⤊ 1⤋
The generic expression for a quadratic equation
aX^2+bX+c=0
X is the variable,a,b,c are constants.
It is a second degree equation.
the solution has two roots
X={-b+- sqrt[b^2-4ac]}/2a
b^2-4ac ia known as discriminant=D
D=0,roots are equal
=perfect square,roots are real and rational
=positive, the roots are real and irrational
=negative, roots are imaginary
2006-12-18 06:02:41 · answer #5 · answered by openpsychy 6 · 1⤊ 0⤋
Here's the formula:
x=-b屉b^2-4ac/2a
ax^2+bx+c=0
2006-12-18 04:12:52 · answer #6 · answered by Anonymous · 2⤊ 0⤋
OMG, what kind of math are you in? This was supposed to be covered in Pre-Algebra and Algebra I.
X= -b +- sq root b^2 - 4ac divided by 2a.
Example: 2x^2 + 2x - 4
2006-12-18 05:08:12 · answer #7 · answered by Anonymous · 1⤊ 0⤋
here you can find a extension definition and examples of quad. eq.
http://en.wikipedia.org/wiki/Quadratic_equation
2006-12-18 03:41:42 · answer #8 · answered by PaD 2 · 2⤊ 1⤋
(-b)屉(b^2-4ac)
____________________
2a
2006-12-18 03:41:17 · answer #9 · answered by Amanda 4 · 3⤊ 1⤋