Question

if x+11y=7and xy=2,find the value of x^2+121y^2​

Answer 1

Answer:

5

Step-by-step explanation:

(a + b)²=a²+ b² + 2ab

( x + 11y)² = x² + 121y² + 22xy

7² = x² + 121y² + 22 × 2

49 - 44 = x² + 121y²

= 5