Job Recruitment Website - Property management company - The inner dam of the new town community developed in Zhao Hua, a Millennium ancient town, is a rectangular land with a length of (3a+b) meters and a width of (2a+b) meters. The property management dep
The inner dam of the new town community developed in Zhao Hua, a Millennium ancient town, is a rectangular land with a length of (3a+b) meters and a width of (2a+b) meters. The property management dep
The inner dam of the new town community developed in Zhao Hua, a Millennium ancient town, is a rectangular land with a length of (3a+b) meters and a width of (2a+b) meters. The property management department intends to put the inner dam.
From the meaning of the question, get
(3a+b)(2a+b)-(a+b)2 = 6 a2+5ab+B2-a2-2ab-B2 = 5a 2+3ab，
When a=3 and b=2, 5a2+3ab=5×32+3×3×2=63,
Answer: The green area is 5a2+3ab square meters.
When a=3 and b=2, the green area is 63m2. ..
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