Question

${x}^{2} + xy + 20 {y}^{2}$
​

Answer 1

Answer:

[X+√20y] ^2

Step-by-step explanation:

Plz mark as brainliest answer i need this

I m following. You

Answer 2

Answer:

Step-by-step explanation:

x+y+z)²=x²+y²+z²+2(xy+yz+zx)

10²=40+2(xy+yz+zx)

2(xy+yz+zx)=100-40=60

xy+yz+zx=30