Question

If x+y=8 and xy=12,then find value of x square +y square

Answer 1

Answer:

x square + y square = 40

Step-by-step explanation:

(x+y) square = x square + y square + 2xy

8 square = x square+ y square + 2(12)

64= x square + y square + 24

64-24= x square+ y square

40 = x square+ y square