The quadratic equation is a type of math problem that looks like this:
ax2+bx+c=0
Let’s break this down into simpler parts:
Key Features:
-
Coefficients:
- a: This is a number in front of x2. It can’t be zero. (That means a should not equal 0.)
- b: This is a number in front of x.
- c: This is just a single number without a variable.
-
Finding Roots:
- We can find the solutions (or "roots") of the equation using this formula:
x=2a−b±b2−4ac
- This means we use the values of a, b, and c to solve for x.
-
Discriminant:
- There’s a part of the formula called the discriminant, which is D=b2−4ac.
- It helps us know what kind of roots we have:
- If D>0: There are two different real roots.
- If D=0: There is one real root (this root repeats).
- If D<0: There are no real roots.
By understanding these parts, you can work with quadratic equations more easily!