Question

(2y)²+(-1)²-2(2y)×(-1)

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Answer 1

(2y) ²+(-1)²-2 (2y) × (-1)

4y² +1 - 4y ×-1

Answer = 4y²-4y

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Answer 2

Answer:

4y²-1+4y

Step-by-step explanation:

$(2y) {}^{2} + ( - 1) {}^{2} - 2(2y) \times ( - 1) \\ 4y {}^{2} - 1 {}^{2} - 4y \times ( - 1) \\ 4y {}^{2} - 1 + 4y$

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