2006-08-07 08:43:45 · 5 answers · asked by Mercedes 1 in Education & Reference ➔ Homework Help
Do you mean "how to form a quadratic equation with roots (2,5)"? 'Coz if you already have the roots, it means your eqn is solved.
The eqn(lets take the variable as x) will be of the form,
(x-root 1)(x- root2)=0. So the answer would be (x-2)(x-5) =0
When you multiply the terms you get,
x^2 - 7x +10 = 0
Another rule that can be quite as handy is :
A quadratic eqn can be expressed as
x^2 - (sum of he roots)x + (product of the roots) = 0
So if your roots were a and b, your eqn would be,
x^2 -(a+b)x + ab = 0
2006-08-07 08:55:43 · answer #1 · answered by Anonymous · 0⤊ 0⤋
using the quadratic formula
For ax2 + bx + c = 0, the value of x is given by:
x = -b+- square root of b2-4ac/2a
2006-08-07 15:48:41 · answer #2 · answered by St Guido 4 · 0⤊ 0⤋
have u tried the quadratic formula?
=(-b+/-sqrt(b^2-4ac))/(2a).
2006-08-07 15:54:19 · answer #3 · answered by cutebp422 2 · 0⤊ 0⤋
With a calculator.
2006-08-07 15:46:40 · answer #4 · answered by Mr J 3 · 0⤊ 0⤋
do you're own homework..you loser..YOU ARE JST SILLY!
2006-08-08 21:29:39 · answer #5 · answered by Anonymous · 0⤊ 0⤋