Question

If x+y=12 and xy =27,then find the value of x^2+y^2
PLEASE HELP !​

Answer 1

90

Explanation:

=> x + y = 12

=> x² + y² + 2xy = 144

=> x² + y² + 2 * 27 = 144

=> x² + y² = 144 - 54

=> x² + y² = 90