Math, asked by seema955, 5 months ago

(-12) × (-130) the sum is ??​

Answers

Answered by nntmbajpai
4

Answer:

Answer is 1560.Please mark as brainliest.

Answered by rudrabhadoriya99
0

Answer:

In △ABC, AD is the median.

By Apollonius theorem,

AB  

2

+AC  

2

=2AD  

2

+2DC  

2

 

c  

2

+b  

2

=2d  

2

+2(  

2

1

​  

BC)  

2

 

c  

2

+b  

2

=2d  

2

+  

2

a  

2

 

​  

 

But, c  

2

=h  

2

+(  

2

a

​  

−x)  

2

 

∴h  

2

+(  

2

a

​  

−x)  

2

+b  

2

=2d  

2

+  

2

a  

2

 

​  

 

h  

2

+  

4

a  

2

 

​  

−ax+x  

2

+b  

2

=2d  

2

+  

2

a  

2

 

​  

 

But h  

2

=d  

2

−x  

2

 

d  

2

−x  

2

−ax+x  

2

+b  

2

=2d  

2

+  

4

a  

2

 

​  

 

ax=b  

2

−d  

2

−  

4

a  

2

 

​  

 

x=  

a

1

​  

[b  

2

−d  

2

−  

4

a  

2

 

​  

]

Hence proved.

Step-by-step explanation:

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