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If 4x-5y=6 and xy=8 then find the value of 16x^2+25y^2​
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If 4x-5y=6 and xy=8 then find the value of 16x^2+25y^2​

User Tjltjl
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1 Answer

4 votes

Answer:

Hello,

356

Explanation:


4x-5y=6\\xy=8\\\\(4x-5y)^2=16x^2+25y^2-40xy\\\\\\16x^2+25y^2=(4x-5y)^2+40xy=6^2+40*8=356\\

User OYRM
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