Question

if 2x +5y=10 xy =4 find 4x^2+25y^2​

Answer 1

Answer:

Given that,

2x+5y=10

Now squaring on both sides,

4x²+25y²+10xy=100

4x²+25y²+10(4)=100

4x²+25y²+40=100

4x²+25y²=100-40=60

So,4x²+25y²=60

Hope it helps you frnd.....