百度试题 结果1 题目Factorise fully the following:a)2x+8b)3x-12c) 6x +4d)18x-9 相关知识点: 试题来源: 解析 e0 2x+8=2(x+4) b) 3x-12= 3(x-4) 6x+4= 2(3x+2) 27 18x-9= 9(2x-1) 反馈 收藏
百度试题 结果1 题目(b) Factorise fully 6x^3-27x^2+30x=3x(2x2-9x+10) [M1]=3x(2x-5)(x-2) 相关知识点: 试题来源: 解析 =3x(2x²-9x+10) [M1] = 3x(2x-5)(x-2) 反馈 收藏
(i) x^(2)+9x+18=x^(2)+6x+3x+18 {by splitting middle term] =x(x+6)+3(x+6)=)x+3(x+6) (ii) 6x^(2)+7x-3=6x^(2)+9x-2x-3 [by splitting middle term] (iii) 2x^(2) -7x -15=2x^(2) -10x+3x-15 [by splitting middle term] =2x(x-5)+3(x-5)=(2x+3)(x-5)
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 LettersandareayWhatisthearea yofthissquare?yxy=...
8(a) Factorise.(i)6x+93(2x-3) Final answer(a)(i)[1](ii)2ax+3a(ii)a(2x+3) Final answer[1](b)Use your answers to part (a) to factorise this expression.6x+9+2ax+3a(3+a)(2x-3) Final answer(b)[2] 相关知识点: