Question

plz answer and I'll definitely mark u as a brainaliest.
And also you'll get 60 points.
Plz answer.​

Answer 1

Step-by-step explanation:

$10).x { }^{2} + y {}^{2} + 2xy = 34 + 2xy \\ (x + y) {}^{2} = 34 + 21 = 55$

similarly

$(x - y) {}^{2} = 13$

so the final answer is "123"

Answer 2

Answer:

your answer is 123

hope it's helpful to you

Step-by-step explanation:

make me as brainilst please