Solution
Jump to navigation
Jump to search
Hints for difficult problems
- If P & q are the roots of the equation find the value of
Pre requisites:
- Standard form of quadratic equation
- Formula to find the sum & product of quadratic equation
- Knowledge of using appropriate identity
Interpretation of the Problem:
- Compare the equation with standard form and identify the values of a,b,c
- To find the sum formformof the roots of the quadratic equation using the formula
- To find the product of the roots of the equation
- Using the identity & rewriting as
- Substitute the values of m+n & mn in
- Simplification
Concepts:
- Formula to find the sum and product of the roots of the quadratic equation
- Identity
Algorithm:
Consider the equation
Here a=2,b=-4 & c=1
If p & q are the roots of the quadratic equation then
Therefore,
=
=8-3
=5