4(2a+3b)方-(3a-b)方 因式分解

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4(2a+3b)方-(3a-b)方因式分解4(2a+3b)方-(3a-b)方因式分解4(2a+3b)方-(3a-b)方因式分解4(2a+3b)方-(3a-b)方=[2(2a+3b)+(3a-b)][2

4(2a+3b)方-(3a-b)方 因式分解
4(2a+3b)方-(3a-b)方 因式分解

4(2a+3b)方-(3a-b)方 因式分解
4(2a+3b)方-(3a-b)方
=[2(2a+3b)+(3a-b)][2(2a+3b)-(3a-b)]
=(4a+6b+3a-b)(4a+6b-3a+b)
=(7a+5b)(a+7b)

4(2a+3b)²-(3a-b)²
=[2(2a+3b)+(3a-b)][2(2a+3b)-(3a-b)]
=(7a+4b)(a+5b)