Question

xty-lo and xy = 21 find x² + y² - ?​

Answer 1

Answer:

The answer is 58.

Step-by-step explanation:

You mean to say x+y =10 ,xy= 21

then as per the rule,

${x}^{2} + {y}^{2} = (x + y) ^{2} - 2xy$

$= > {10}^{2} - 2.21$

$= > 100 - 42$

$= > 58$