Math, asked by brar134, 2 months ago

11. Find the value of 9x2 + 25y2 if 3x + 5y = 8 and xy = 0.5.

Answers

Answered by arivumathis2000

1

Step-by-step explanation:

3x+5y=8,xy=0.5

(3x+5y)^2=8^2

9x^2+ 25y^2+30xy=64

9x^2+25y^2=64-30xy=64-30(0.5)=64-15=49

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