【题目】Factorize:(1) x^2-3xy-10y^2+x+9y-2(2) x^2+xy-6y^2+x+13y-6(3) x^2+2xy-8y^2+2xz+14yz-3z^2(4) 6x^2-5xy-6y^2+2x+23y-205) 2x^2-7xy-22y^2-5xz+35yz-3z^26) 6x^2-7xy-3y^2-xz+7yz-2z^2 答案 (z-i-f+x)(z+(f_g)-x_i) (9)(z+fz-x...
(2) Original expression=(x9−1)+(x6−1)+(x3−1)=(x−1)(x2+x+1)(x6+2x3+3) (3) Original expression=(x4+x3+x2)−(4x2+4x+4)=(x2+x+1)(x2−4)=(x2+x+1)(x+2)(x−2) (4) Original expression=(x4+x3+x2)+(x2+x+1)=(x2+x+1)(x2+1)结果...
(ii)(x2+4x2) =x2+(2x)2+(2×x×2x)−(2×x×2x) =(x+2x)2−4={(x+2x)2−22} =(x+2x−2)(x+2x+2). ∴(x2+4x2)=(x+2x−2)(x+2x+2). (iii)(x4+1x4+1) =(x4+1x4+2)−1=(x2+1x2)2−12 =(x2+1x2−1){(x2+1x2+2)−1} =(x2...
百度试题 结果1 题目【题目】Factorize:(1) x^4+2x^3+3x^2+2x+1(2) x^4+7x^3+14x^2+7x+1(3) x^4+y^4+(x+y)^4 相关知识点: 试题来源: 解析 【解析】Showminan[sina] 反馈 收藏
百度试题 结果1 题目【题目】Factorize:() x^4+1/4y^42) x^4-x^2y^2+16y^4(3) 18a^2-a^4-814 x^4+x^3+9/4x^2+x+1 相关知识点: 试题来源: 解析 【解析】Showminan[sina] 反馈 收藏
Solve:3.(a)4x²-4x+1=(2x-1)²So:3.(b)(x+3y)²-6(x+3y)(x-y)+9(x-y)²=[(x+3y)-3(x-y)]²=4(3y-x)²Solve:4.(a)-m²(r-1)+m-m²=m[1-m(r-1)+m]4.(b)-m²(r-1)²-(r-1)-m(1-r)=(r-...
For example, in the expression {eq}4x + 2{/eq}, the common factor is 2. Thus, we can write the expression as {eq}2(2x + 1){/eq}.Answer and Explanation: In the expression: {eq}14x^4 - 19x^3 - 3x^2{/eq} The common factor is {eq}x^2{/eq}. Thus, factoring out {...
(1) Original expression=x4+x2y2+14y4−x2y2=(x2+12y2)2−(xy)2=14(2x2+2xy+y2)(2x2−2xy+y2) (2) Original expression=x4+8x2y2+16y4−9x2y2=(x2+4y2)2−(3xy)2=(x2+3xy+4y2)(x2−3xy+4y2) (3) Original expression=−(a4−18a2+81)=−(a2...
【解析】(1) To make the calculation easier, one can leta=(x-2+x-4)/2=x-3,t henO. E.=(a+1)^3+(a-1)^3+8a^2=(a^3+3a^2+3a+1)+(a^3-3a^2+3a-1)+8a^2 = 2a^3+6a+8a^2=2a(a^2+4a+3) =2a(a+1)(a+3)S_Δbstitutea=x-3backtoget O.E.=2x(x-3)(x -2...
示例1: test_mixed ▲点赞 6▼ # 需要导入模块: import pandas [as 别名]# 或者: from pandas importfactorize[as 别名]deftest_mixed(self):# doc example reshaping.rstx = Series(['A','A', np.nan,'B',3.14, np.inf]) labels, uniques = algos.factorize(x) ...