Question

4a^2-b^2-4c^2+4bc 如何分解；谢谢指导

Answer 1

原式=4a²-(b²-4bc+4c²)
=(2a)²-(b-2c)²
=(2a+b-2c)(2a-b+2c)

Answer 2

解：原式=4a²-(b²-4bc+4c²)
=(2a)²-(b-2c)²
=(2a+b-2c)(2a-b+2c)

Answer 3

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