Math, asked by archanas1911, 1 month ago

Elimination method
x+y=8
x-y=7​

Answers

Answered by darp2722
1

Answer:

Since, (x+y)  

3

=x  

3

+y  

3

+3xy(x+y)

∴x  

3

+y  

3

=(x+y)  

3

−3xy(x+y)

Given, x+y=8 and xy=7

⇒x  

3

+y  

3

=(8)  

3

−3(7)(8)

=512−168=344.

Step-by-step explanation:

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