(2x-3y)^2+(4x+9y)(4x-9y)+(2x+3y)^2计算或因式分解
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![(2x-3y)^2+(4x+9y)(4x-9y)+(2x+3y)^2计算或因式分解](/uploads/image/z/1615069-37-9.jpg?t=%282x-3y%29%5E2%2B%284x%2B9y%29%284x-9y%29%2B%282x%2B3y%29%5E2%E8%AE%A1%E7%AE%97%E6%88%96%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3)
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(2x-3y)^2+(4x+9y)(4x-9y)+(2x+3y)^2计算或因式分解
(2x-3y)^2+(4x+9y)(4x-9y)+(2x+3y)^2
计算或因式分解
(2x-3y)^2+(4x+9y)(4x-9y)+(2x+3y)^2计算或因式分解
原式=(4x+12xy+9y)-(16x-81y)+(4x-12xy+9y) =4x+12xy+9y-16x+81y+4x-12xy+9y =-8x+99y
求采纳