Question

If x+y=13 and xy=7, then (x square+y square) is​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Hey mate!

Here's your answer!

We know that,

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

Substituting the values,

$x {}^{2} + y {}^{2} = (13) {}^{2} - 2(7) \\ = > 169 - 14 \\ = > 155.$

That's the answer!

Hope it helps :)