CBSE BOARD X, asked by shikhadhandhal131980, 1 month ago

1 upon a alpha + b + 1 upon a beta + b​

Answers

Answered by omconstructionskct
0

Answer:

traingle formula

Explanation:

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Answered by jai4276
0

Answer:

Explanation:

If α,β are roots of equation ax  

2

+bx+c=0 then α+β=  

a

−b

​  

&αβ=  

a

c

​  

 

i) (1+α)(1+β)

=1+α+β+αβ

=1+(  

a

−b

​  

)+  

a

c

​  

 

=1+(  

a

c−b

​  

)

ii) α  

3

β+αβ  

3

 

αβ(α  

2

+β  

2

)

a

c

​  

(  

a  

2

 

b  

2

 

​  

−  

a

2c

​  

)

a  

3

 

c

​  

(b  

2

−2ac)

α+β=−  

a

b

​  

 

(α+β)  

2

=b  

2

/a  

2

 

α  

2

+β  

2

+2αβ=b  

2

/a  

2

 

α  

2

+β  

2

=  

a  

2

 

b  

2

 

​  

−  

a

2c

​  

 

iii)  

α

1

​  

+  

β

1

​  

 

αβ

β

​  

+  

αβ

α

​  

=  

αβ

β+α

​  

 

=  

a

−b

​  

×  

c

a

​  

=  

c

−b

​  

 

iv)  

aα+b

1

​  

+  

aβ+b

1

​  

                 α+β=  

a

−b

​  

 

=  

aα−a(α+β)

1

​  

+  

aβ−a(α+β)

1

​  

⇒b=−a(α+β)

=  

aα−aα−aβ

1

​  

+  

aβ−aα−aβ

1

​  

 

=−  

a

1

​  

(  

α

1

​  

+  

β

1

​  

)=  

a

−1

​  

(  

c

−b

​  

)=  

ac

b

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