Introduction
Chapter Name : Quadratic Equations |
Sub Topic Code : 104_10_04_01_01 |
Topic Name : Introduction |
|
Sub Topic Name : Introduction |
|
Introduction
What is an equation?
Pre-Requisites:
Basic knowledge on polynomials.
Activity:
Write down a quadratic equation and observe that it will have 2 possible values of x for which the equation satisfies.
Real Life Question:
Given that a triangular plot whose sides are x, x+2 but area is 7.5, then write the quadratic equation in terms of x for solving the length.
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Expression Equation Quadratic polynomial Quadratic equation | Combination of symbols which can include variables , constants, etc., Mathematical that states equality of 2 expressions Polynomial of the form ax2+bx+c , a?0 Quadratic polynomial equated to 0. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Quadratic equation solving. | Write down a quadratic equation and try to substitute values of x such that the LHS becomes 0. |
Real life uses :
Many real life situations are approximated to quadratic equations.
Practical examples around us
| Examples | Explainations |
|---|---|
| A sand carrying truck with unknown dimensions but with sand of height 1m brings a volume of 15m3.The difference between length and breadth is 2m.Find truck dimensions | x(x+2)1=15 ? x2+2x-15=0 this is a quadratic equation. |
What you learn in Theory:
Any quadratic polynomial equated to 0 is a quadratic equation.
What you learn in Practice:
Quadratic equation uses.