几道初二的整式乘法计算题1.5m(m²-2m+4)+m²(m-1) 2.x(x³+2x-3)-(x²-1)*x3.(x-2y)*(-3x) 4.(-3x²)*(4x+1)
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![几道初二的整式乘法计算题1.5m(m²-2m+4)+m²(m-1) 2.x(x³+2x-3)-(x²-1)*x3.(x-2y)*(-3x) 4.(-3x²)*(4x+1)](/uploads/image/z/5326516-28-6.jpg?t=%E5%87%A0%E9%81%93%E5%88%9D%E4%BA%8C%E7%9A%84%E6%95%B4%E5%BC%8F%E4%B9%98%E6%B3%95%E8%AE%A1%E7%AE%97%E9%A2%981.5m%28m%26%23178%3B-2m%2B4%29%2Bm%26%23178%3B%28m-1%29+2.x%28x%26%23179%3B%2B2x-3%29-%28x%26%23178%3B-1%29%2Ax3.%28x-2y%29%2A%28-3x%29+4.%28-3x%26%23178%3B%29%2A%284x%2B1%29)
几道初二的整式乘法计算题1.5m(m²-2m+4)+m²(m-1) 2.x(x³+2x-3)-(x²-1)*x3.(x-2y)*(-3x) 4.(-3x²)*(4x+1)
几道初二的整式乘法计算题
1.5m(m²-2m+4)+m²(m-1) 2.x(x³+2x-3)-(x²-1)*x
3.(x-2y)*(-3x) 4.(-3x²)*(4x+1)
几道初二的整式乘法计算题1.5m(m²-2m+4)+m²(m-1) 2.x(x³+2x-3)-(x²-1)*x3.(x-2y)*(-3x) 4.(-3x²)*(4x+1)
1.
5m(m²-2m+4)+m²(m-1)
=(5m³-10m²+20m)+(m³-m²)
=5m³-10m²+20m+m³-m²
=6m³-11m²+20m
2.
x(x³+2x-3)-(x²-1)*x
=(x^4+2x²-3x)-(x³-x)
=x^4+2x²-3x-x³+x
=-2x+x^4+2x²-x³3. (x-2y)*(-3x)
=-3x²+6xy
4.(-3x²)*(4x+1)
=-12x³-3x²
1.
5m(m²-2m+4)+m²(m-1)
=(5m³-10m²+20m)+(m³-m²)
=5m³-10m²+20m+m³-m²
=6m³-11m²+20m
2.
x(x³+2x-3)-(x²-1)*x
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1.
5m(m²-2m+4)+m²(m-1)
=(5m³-10m²+20m)+(m³-m²)
=5m³-10m²+20m+m³-m²
=6m³-11m²+20m
2.
x(x³+2x-3)-(x²-1)*x
=(x四次方+2x²-3x)-(x³-x)
=x四次方+2x²-3x-x³+x
=-2x+x四次方+2x²-x³【总感觉这道题算的不对.....我都忘得差不多了....
3. (x-2y)*(-3x)
=-3x²+6xy
4.(-3x²)*(4x+1)
=-12x³-3x²
总之.....错了就不是我的事了.....都忘了....姐姐很大了......
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如果这都不会算 那你 怎么会上网的啊
奇了怪了 小学生都会上网了 太坑人了