Question

7. The adjacent sides of a rectangle are -6x²+7x²y² and 7xy-5x²+9x²y². Find its perimeter ​

Answer 1

Formula : 2(l + b)

P = 2{-6x²+7x²y² + 7xy-5x²+9x²y²}

P = 2(-11x² + 16x²y² + 7xy)

P = -22 x² + 32x²y² + 14xy

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