关于乘法公式的数学计算题1.(11-a^2)(a^2-11)2.a(a^-a+1)-a(a+1)(a-1)3.(m-2n+3)(m+2n-3)4.(3a+2b)(-3a-2b)5.3(x+1)^2-11(x+1)(x-1)+2(2x-1)^2
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/22 10:57:28
![关于乘法公式的数学计算题1.(11-a^2)(a^2-11)2.a(a^-a+1)-a(a+1)(a-1)3.(m-2n+3)(m+2n-3)4.(3a+2b)(-3a-2b)5.3(x+1)^2-11(x+1)(x-1)+2(2x-1)^2](/uploads/image/z/386518-22-8.jpg?t=%E5%85%B3%E4%BA%8E%E4%B9%98%E6%B3%95%E5%85%AC%E5%BC%8F%E7%9A%84%E6%95%B0%E5%AD%A6%E8%AE%A1%E7%AE%97%E9%A2%981.%2811-a%5E2%29%28a%5E2-11%292.a%28a%5E-a%2B1%29-a%28a%2B1%29%28a-1%293.%28m-2n%2B3%29%28m%2B2n-3%294.%283a%2B2b%29%28-3a-2b%295.3%28x%2B1%29%5E2-11%28x%2B1%29%28x-1%29%2B2%282x-1%29%5E2)
关于乘法公式的数学计算题1.(11-a^2)(a^2-11)2.a(a^-a+1)-a(a+1)(a-1)3.(m-2n+3)(m+2n-3)4.(3a+2b)(-3a-2b)5.3(x+1)^2-11(x+1)(x-1)+2(2x-1)^2
关于乘法公式的数学计算题
1.(11-a^2)(a^2-11)
2.a(a^-a+1)-a(a+1)(a-1)
3.(m-2n+3)(m+2n-3)
4.(3a+2b)(-3a-2b)
5.3(x+1)^2-11(x+1)(x-1)+2(2x-1)^2
关于乘法公式的数学计算题1.(11-a^2)(a^2-11)2.a(a^-a+1)-a(a+1)(a-1)3.(m-2n+3)(m+2n-3)4.(3a+2b)(-3a-2b)5.3(x+1)^2-11(x+1)(x-1)+2(2x-1)^2
1.(11-a^2)(a^2-11)
原式=-(a^2-11)^2
=-(a^4-22a^2+121)
=-a^4+22a^2-121
2.a(a^2-a+1)-a(a+1)(a-1)
原式=a(a^2-a+1-(a+1)(a-1))
=a(a^2-a+1-a^2+1)
=a(-a+2)
=-a^2+2a
3.(m-2n+3)(m+2n-3)
原式=(m-(2n-3))(m+(2n-3))
=m^2-(2n-3)^2
=m^2-4n^2+12n-9
1.=-(a²-11)²=-a^4+22a²-121
2.看不懂
3.=m²-(2m-3)²=m²-4m²-9+12m²=-3m²+12m²-9
这也叫问题啊
.(11-a^2)(a^2-11)=.-(11-a^2) (11-a^2)=-(11-a^2)^2==-11^2-2×11×a^2+a^4
其他的相同