Considering theways of obtaining –3 gives:2x²-x-3 = (2x )(x )-1 +3+1-3 Note that these will+3-1 be multiplied by the-3+1 2 in the 2x termFrom the last of these we can obtain the middle middle term,(-3×x)+(1×2x) =-3x+2x=-xso2x²-x-3 = (2x-3)(x+1)....
(i) x ^ 3 −2x ^ 2 −x+2 =x ^ 2 (x−2)−1(x−2) =(x−2)(x ^ 2 −1) =(x−2)(x+1)(x−1) (ii) x ^ 3 −3x ^ 2 −9x−5 =x ^ 3 −5x ^ 2 +2x ^ 2 −10x+x−5 =x ^ 2 (x−5)+2x(x−5)+1(x−5) =(x
题目 9. (a) Factorise 2x^2-x-10(2x-5)(x+2)...(2)(b) Solve 2x^2-x-10=02x*5=0⇒x=5/2 x+2=0⇒x=-2 ■■(1) 相关知识点: 试题来源: 解析(2x - 5)(x + 2)2x × 5 = 0 → x = 5/2x + 2 = 0 ⇒ x = -2 反馈...
x3−2x2+3x+8 is a polynomial. The powers or indices of the variable are 3, 2, 1 and 0 (8 means 8xo). 01:30View Solution Factorise x3−2x2−x+2 01:28View Solution Factorise : x^(2)-y^(2)-2x+1 02:16View Solution Factorise x3+2x2+x. 01:10View Solution Factorise x2...
解答:提取公因式2,得到$2(x^2 - 2x + 1)$。然后利用完全平方公式,得到$2(x - 1)^2$。 将多项式$x^2 + 4x - 5$进行因式分解。 解答:利用十字相乘法,找到两个数-1和5,它们的和等于4,它们的积等于-5。然后将其与多项式的一次项和常数项组合,得到$(x - 1)(x + 5)$...
百度试题 结果1 题目2 Factorise 2x^2-x .x(2x-1)---.--.---. 相关知识点: 试题来源: 解析 x(2x-1) 反馈 收藏
百度试题 结果1 题目Factorise x2−2x−63. 因式分解x2−2x−63.相关知识点: 试题来源: 解析 (x+7)(x−9). x2−2x−63 =x2+(7−9)x+(7)×(−9) =(x+7)(x−9).反馈 收藏
结果1 结果2 题目【题目】Questions that require solutions(1)Factorise:3ax+4by+4ay+3bx .(2)Factorise:x^2-2xy-a^2+y^2 (3)Factorise:7x^2-3y+xy-21x .(4)Factorise:4a^2-4(ab+4)+b^2 .(5)Factorise:x^2-4xy+4y^2-2x+4y-3 .(6)Factorise:a^2-a^2b+ab^2-a+b-b^2. ...
解析 (x−2)(x+1)2. 结果一 题目 Factorise x3+x−2.因式分解x3+x−2. 答案 (x−2)(x+1)2.x3−3x−2=x2−8−3(x−2)=(x−2)(x2+2x+4)−3(x−2)=(x−2)(x+1)2.相关推荐 1Factorise x3+x−2.因式分解x3+x−2. ...
2ax-ay;4br-2by;2x-y;a+2b 结果一 题目 Fctorise:2tax+4bx-ay-2by=()+()=() 答案 2ax-ay;4bx-2by;2x -y;a+2b 结果二 题目 )+)=Factorise:2ax+4bx-2by=()+()=()+() 答案 2ax-ay;4bx-2by ;2x-y;a+2b 相关推荐 1Fctorise:2tax+4bx-ay-2by=()+()=() 2)...