Question

If x-y= 15 and xy=10, find the value of x² + y²​

Answer 1

Answer:

245

Step-by-step explanation:

As we know the Identity for

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

$15^{2}$ = $x^{2}$ - 2 * 10 + $y^{2}$

225 = $x^{2}$ + $y^{2}$ - 20

225 + 20 =  $x^{2}$ + $y^{2}$

245 = $x^{2}$ + $y^{2}$

Thank you

Answer 2

Answer:

The correct answer is 245.

See the attached document for step by step explanation.

Step-by-step explanation: