x^2 - 13 = (x + √(13))(x - √(13)) **a. 20x² - 4x** 提取公因式 4x,得到 4x(5x - 1)。 **b. x² - 13** 利用平方差公式 (a² - b² = (a + b)(a - b)),将表达式分解为 (x + √13)(x - √13)。 ## 答案: a. 20x² - 4x = 4x(5x - 1) b...
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$(x - 1)(x + 5)$。 通过不断练习和总结,可以逐渐掌握因式分解的技巧和...
(b) Factorise.x^2+5x-6 (x+6)(x-1)final answer...[2] 相关知识点: 试题来源: 解析 (x+6)(x-1)final answerB1 for final answer (x+a)(x+b)whereab=-6 or a+b=5or for x(x-1)+6(x-1) seenor for x(x+6)-[1](x+6) seenor for correct answe seen and spoilt 反馈...
百度试题 结果1 题目Factorise12x^2+5x-3(3x-1)(4x+3) 相关知识点: 试题来源: 解析 (3x-1)(4x+3) 反馈 收藏
11 (a) Factorise.5x-15..[1](b)Solve.4(3x-2)=28---[3](c)Simplify.(4a)/b*(3b^2)/(2a^2)[2](d) On the number line, show the inequality x≤3.4 3-i1034[1](e) Solve.7x3x+6---[2](f) Solve these simultaneous equations.x+y=5x-y=7r=y=...[2] 相关知识点: ...
结果1 题目【题目】C. Questions that require solutionsFactorise the following:(1) x^2-5x+6(2) 4x^2-5(3) 4x^2+8x-1 ;(4) 3t^2-4t-1 ;(5)2y2-4y+1;(6) 2x^2-10xy+9y^2(7) -x^2-xy+y^2 ;(8) 2x^2y^2+4xy-3(9) -y^2x-4x^2y+2x^3(10) (x^3+x)^2-2x(x+1)...
16x 2 + 40xy + 25y 2 . (ii) x 2 –( y – 3)x – 3y 2. factorise by splitting the middle term: (i) 4x 2 –12x + 9 = 0. (ii) 4x 2 –4ax + (a 2 –b 2 ) = 0. 3. factorise the polynomial: z 2 –3z – 28 using the factor theorem. learn more about ...
1. Factor the following Polynomial: 2y^2 - 4y - 6 2. Factor the following Polynomial: 14y^2 - 9y - 1 Let f(x) = 3x^4 + x^3 + 4x^2 + 4x + 3 be a polynomial in Z_5x. Factorise f(x) as far as possible. Factorise the polynomial f(x) = 2x^3 +15x^2+3x...
a level的数学.1.Simplify (x^3+7^x2+5x-28)/(x+4)2.Factorise completely x^3+5x^2-2x-243.Make r the subject of the formula 4.If ,find the value of y when x = 9 given that y = 24 when x = 4 .5.The probability that I oversleep on any given day is 1/10.If I ...
8x+4x+22y–2y 12x–6y+26y 8x+6x–2x+22y–2yCompleteyourdiagram Lettersfornumbers:a+b=10,whatcouldaandbbe?ifa=2,b=8whatisa+b?ifa=25,b=5whatisa+b?Letters,numbersandarea 6 2 b 5 Area?2x6=12 Area?5xb=5b Letters,numbersandarea 4 a 4 a Area?4x4=16Area?axa=a2 Lettersandarea...