The sides of a rectangle are given by x² + 3y2and x3- y2. Find its perimeter.
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The sides of a rectangle are given by x2+ 3y2 and x3 - y3. Find the perimeter. ... So P = 12 x2 + 4 x y - 6 y2 ...
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2x^3+2x^2+4y^2
Step-by-step explanation:
Perimeter = 2(length + breadth)
= 2{(x^2+3y^2) + (x^3-y^2)}
= 2(x^3+x^2+2y^2)
= 2x^3+2x^2+4y^2
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