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Given that x-y=3 and 3x+y=17, find without solving for X and Y the value of (a) 2xy-x²-y² (b) 6xy+y²+9x² (c) 3x²-2xy+y²

Given that x-y=3 and 3x+y=17, find without solving for X and Y the value of
(a) 2xy-x²-y²
(b) 6xy+y²+9x²
(c) 3x²-2xy+y²
(d)

Answers

sharon kalunda answered the question on August 15, 2019 at 10:09

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