分解因式 给过程、、有分(十字相乘法)1.x^6+8x^3+152.m^2x^2-8mx+123.x^2y^2-7xy+104.x^2-7xy+12y^25.a^2+2ab-15b^26.m^2+4mn-12n^27.p^2+9pq+18q^28.(m+n)^2-(m+n)-309.(x-y)^2-3(x-y)-40
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/27 13:11:00
![分解因式 给过程、、有分(十字相乘法)1.x^6+8x^3+152.m^2x^2-8mx+123.x^2y^2-7xy+104.x^2-7xy+12y^25.a^2+2ab-15b^26.m^2+4mn-12n^27.p^2+9pq+18q^28.(m+n)^2-(m+n)-309.(x-y)^2-3(x-y)-40](/uploads/image/z/13403013-69-3.jpg?t=%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F+%E7%BB%99%E8%BF%87%E7%A8%8B%E3%80%81%E3%80%81%E6%9C%89%E5%88%86%28%E5%8D%81%E5%AD%97%E7%9B%B8%E4%B9%98%E6%B3%95%291.x%5E6%2B8x%5E3%2B152.m%5E2x%5E2-8mx%2B123.x%5E2y%5E2-7xy%2B104.x%5E2-7xy%2B12y%5E25.a%5E2%2B2ab-15b%5E26.m%5E2%2B4mn-12n%5E27.p%5E2%2B9pq%2B18q%5E28.%28m%2Bn%29%5E2-%28m%2Bn%29-309.%28x-y%29%5E2-3%28x-y%29-40)
分解因式 给过程、、有分(十字相乘法)1.x^6+8x^3+152.m^2x^2-8mx+123.x^2y^2-7xy+104.x^2-7xy+12y^25.a^2+2ab-15b^26.m^2+4mn-12n^27.p^2+9pq+18q^28.(m+n)^2-(m+n)-309.(x-y)^2-3(x-y)-40
分解因式 给过程、、有分(十字相乘法)
1.x^6+8x^3+15
2.m^2x^2-8mx+12
3.x^2y^2-7xy+10
4.x^2-7xy+12y^2
5.a^2+2ab-15b^2
6.m^2+4mn-12n^2
7.p^2+9pq+18q^2
8.(m+n)^2-(m+n)-30
9.(x-y)^2-3(x-y)-40
分解因式 给过程、、有分(十字相乘法)1.x^6+8x^3+152.m^2x^2-8mx+123.x^2y^2-7xy+104.x^2-7xy+12y^25.a^2+2ab-15b^26.m^2+4mn-12n^27.p^2+9pq+18q^28.(m+n)^2-(m+n)-309.(x-y)^2-3(x-y)-40
1.x^6+8x^3+15=(x^3+3)(x^3+5)把x^3作为一个整体x^6=(x^3)^2
2.m^2x^2-8mx+12=(mx-6)(mx-2)把mx作为一个整体
3.x^2y^2-7xy+10=(xy-5)(xy-2)把xy作为一个整体
4.x^2-7xy+12y^2=(x-3y)(x-4y)把12y^2作为一个常数,分解12y^2=3y*4y
5.a^2+2ab-15b^2=(a-3b)(a+5b)把-15b^2作为一个常数,分解-15b^2=-3b*5b
6.m^2+4mn-12n^2=(m-6n)(m+2n)把-12n^2作为一个常数,分解-12n^2=-6n*2n
7.p^2+9pq+18q^2=(p+3q)(p+6q)把18q^2作为一个常数,分解18q^2=3q*6q
8.(m+n)^2-(m+n)-30=(m+n-6)(m+n+5)把m+n作为一个整体
9.(x-y)^2-3(x-y)-40=(x-y-8)(x-y+5)把(x-y)作为一个整体