Respuesta :

Here,

x+y=12 and xy=22

we know that,

[tex]\tt{(x+y)^2=x^2+y^2+2xy }[/tex] ⠀

according to the question,

[tex]\tt{ (12)^2=x^2+y^2+2×22 }[/tex] ⠀

[tex]\tt{ x^2+y^2=144-44 }[/tex] ⠀

[tex]\tt{x^2+y^2=100 }[/tex] ⠀

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