初二几道因式分解1.x³-x(y-z)²2.a的4次方b的4次方-163.(a-b)²-(3a+2b)²4.x的+2次方-x的n次方5.(a-b)³6.x的5次方-16x7.16m的4次方-25n² (老师题超不清 应该这样吧)8.101²-1019.53
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![初二几道因式分解1.x³-x(y-z)²2.a的4次方b的4次方-163.(a-b)²-(3a+2b)²4.x的+2次方-x的n次方5.(a-b)³6.x的5次方-16x7.16m的4次方-25n² (老师题超不清 应该这样吧)8.101²-1019.53](/uploads/image/z/7304685-69-5.jpg?t=%E5%88%9D%E4%BA%8C%E5%87%A0%E9%81%93%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A31.x%26%23179%3B-x%EF%BC%88y-z%29%26%23178%3B2.a%E7%9A%844%E6%AC%A1%E6%96%B9b%E7%9A%844%E6%AC%A1%E6%96%B9-163.%EF%BC%88a-b%29%26%23178%3B-%EF%BC%883a%2B2b%29%26%23178%3B4.x%E7%9A%84%2B2%E6%AC%A1%E6%96%B9-x%E7%9A%84n%E6%AC%A1%E6%96%B95.%EF%BC%88a-b%29%26%23179%3B6.x%E7%9A%845%E6%AC%A1%E6%96%B9-16x7.16m%E7%9A%844%E6%AC%A1%E6%96%B9-25n%26%23178%3B+%EF%BC%88%E8%80%81%E5%B8%88%E9%A2%98%E8%B6%85%E4%B8%8D%E6%B8%85++%E5%BA%94%E8%AF%A5%E8%BF%99%E6%A0%B7%E5%90%A7%EF%BC%898.101%26%23178%3B-1019.53)
初二几道因式分解1.x³-x(y-z)²2.a的4次方b的4次方-163.(a-b)²-(3a+2b)²4.x的+2次方-x的n次方5.(a-b)³6.x的5次方-16x7.16m的4次方-25n² (老师题超不清 应该这样吧)8.101²-1019.53
初二几道因式分解
1.x³-x(y-z)²
2.a的4次方b的4次方-16
3.(a-b)²-(3a+2b)²
4.x的+2次方-x的n次方
5.(a-b)³
6.x的5次方-16x
7.16m的4次方-25n² (老师题超不清 应该这样吧)
8.101²-101
9.535²-465²
ps: 有些数学符号看不懂野就不要写了 如果像3的4次方 别换成别的符号 就写中文. 谢谢. 分不是问题 好德分多多. 求正确答案
初二几道因式分解1.x³-x(y-z)²2.a的4次方b的4次方-163.(a-b)²-(3a+2b)²4.x的+2次方-x的n次方5.(a-b)³6.x的5次方-16x7.16m的4次方-25n² (老师题超不清 应该这样吧)8.101²-1019.53
1.x³-x(y-z)²
=x[x²-(y-z)²]
=x(x+y-z)(x-y+z)
2.a⁴b⁴-16
=(a²b²)²-4²
={a²b²-4)(a²b²+4)
=(ab-2)(ab+2)(a²b²+4)
3.(a-b)²-(3a+2b)²
=[(a-b)+(3a+2b)][(a-b)-(3a+2b)]
=(4a+b)(-2a-3b)
=-(4a+b)(2a+3b)
4.x²-xⁿ
=x²(1-x的n-2次方)
5.(a-b)³
已经是最简了,是不是题目没打完,
或者是展开,但不是分解因式.
(a-b)³=a³-3a²b+3ab²-b³
6.x的5次方-16x
=x(x⁴-16)
=x(x²-4)(x²+4)
=x(x-2)(x+2)(x²+4)
7.16m⁴-25n²
=(4m²-5n)(4m²+5n)
8.101²-101
=101(101-1)
=101*100
=10100
9.535²-465²
=(535-465)(535+465)
=70*1000
=70000