Question

If 3x + 4y = 16 and xy = 4; find the value of 9x²+16y²


If u answer clearly then ur answer will be marked as brainliest answer


sure 100%
​

Answer 1

Step-by-step explanation:

hope this answer is helpful

Answer 2

$\large\boxed{Answer}$

3x + 4y = 16

Doing square both side

(3x + 4y)² = 16²

(3x)² + (4y)² + 2(3x)(4y) = 256

9x² + 16y² + 24xy = 256

9x² + 16y² + 24(4) = 256

9x² + 16y² = 256 - 96

9x² + 16y² = 160