Question

two adjacent sides of a rectangle are 5x² - 3y² and x²+ y². find the perimeter.

Answer 1

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$Two \ sides = 5x^2 - 3y^2\ and \ x^2 + y^2\\\\We \ know,\\Perimeter = 2(l+b)\\~~~~~~~~~~~~~~~= 2(5x^2 - 3y^2 + x^2 + y^2)\\~~~~~~~~~~~~~~~=2(6x^2 - 2y^2)\\~~~~~~~~~~~~~~~=\boxed{\boxed{\bold{12x^2 - 4y^2}}}$

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