# Algebra-1

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1. if in equation Ax^2+Bx+c=0
A=C, then?
two roots α and β are reciprocal to each other
2. if in equation Ax^2+Bx+C=0,
B=0
two roots α and β are equal in magnitude and oposite in sign
3. in equation x2+5x+6=0
the sign of two roots α and β is ???
• sign of (α and β)=  -ve
• sign of (αβ)= +ve
• both roots α and β are negative
4. in equation x2-5x+6=0
the sign of two roots α and β is ???
• sign of (α and β)=  +ve
• sign of (αβ)= +ve
• so,both roots α and β are positive
5. in equation x2-5x-6=0
the sign of two roots α and β is ???
• sign of (α and β)=  +ve
• sign of (αβ)= -ve
• then, α is positive and β is negative if  α>β(numerically)
6. in equation x2+5x-6=0
the sign of two roots α and β is ???
• sign of (α and β)=  -ve
• sign of (αβ)= +ve
• then, α is negative and β is positive
• if,  α>β(numerically)
7. roots of an equation is given by
x=(-b±√D)÷2a

### Card Set Information

 Author: Anonymous ID: 283278 Filename: Algebra-1 Updated: 2014-09-17 05:33:03 Tags: algebra Folders: algebra Description: algebra set -1 Show Answers:

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