Question

plz answer me i marks you in brainlist
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Answer 1

Answer:

11+x2y

Step-by-step explanation:

let a be the third side

perimeter is sum of lengths of three sides of a triangle

x2y + 10 = (x2y - 4)+(3-2x2y)+ a

x2y+10-(x2y-4)-(3-2x2y)=a

x2y+10-x2y+4-3+2x2y=a

11+x2y

Answer 2

Answer:

Step-by-step explanation:

X^2y+10=X^2y-4-3-2X^2Y +third side

X^2Y+10 =-(X -7) +third side

=> X^2Y+10 +X-7 =Third side.

=> X^2Y +3+X = Third side