Question

If 3x-4y=10 and xy=1 , find the value of 9x^2+16y^2​

Answer 1

Answer:

take squre both side of given equ

So answer is = 100 -24

= 76

Answer 2

Solution :-

3x - 4y = 10

and

xy = 1

Now by squaring :-

→(3x - 4y)² = (10)²

→ 9x² + 16y² - 24xy = 100

→ 9x² + 16y² = 100 + 24xy

→ 9x² + 16y² = 100 + 24

→ 9x² + 16y² = 124