Question

Simplify. a) (x -2y + 3)² + (x + 2y -3)²​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

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$(x - 2y + 3) {}^{2} + (x + 24 - 3) {}^{2} \\ = x {}^{2} + 4y {}^{2} + 9 + x {}^{2} + 9 \\ = 2x {}^{2} + 4y {}^{2} + 18$