计算1.(4m-3)平方+(4m+3)(4m-3)2.(3x-4y)平方-(3x+4y)平方-xy

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计算1.(4m-3)平方+(4m+3)(4m-3)2.(3x-4y)平方-(3x+4y)平方-xy

计算1.(4m-3)平方+(4m+3)(4m-3)2.(3x-4y)平方-(3x+4y)平方-xy
计算1.(4m-3)平方+(4m+3)(4m-3)
2.(3x-4y)平方-(3x+4y)平方-xy

计算1.(4m-3)平方+(4m+3)(4m-3)2.(3x-4y)平方-(3x+4y)平方-xy
原式=【(3x-4y)+(3x+4y)】【(3x-4y)-(3x+4y)】-xy
=6x*(-8y)-xy
=-48xy-xy
=-49xy
希望能帮到你\(^o^)/~

1.(4m-3)平方+(4m+3)(4m-3)
=(4m-3)(4m-3+4m+3)
=8m(4m-3)
2.(3x-4y)平方-(3x+4y)平方-xy
=[(3x-4y)+(3x+4y)]*[(3x-4y)-(3x+4y)]-xy
=(6x)*(-8y)-xy
=-48xy-xy
=-49xy