Question

3-23+2, find x2 + y2​

Answer 1

Step-by-step explanation:

(x + y)² we get-

(x + y)² = x² + y² + 2xy,

(x + y)² - 2xy = x² + y²,

x² + y² = (x + y)² - 2xy.

By putting the value of x + y = 2 and xy = 23 we get-

x² + y² = 2² - 2×23,

x² + y² = 4 - 46,

x² + y² = -42.

So the answer is -42