3.Thurc hien cac phep cong, trù phan thuc sau:a)x/(x+2)-x/(x-2) b)(3x)/(2y)+(5x)/(3y) c)(y-1)/(5y)-(3x-1)/(15x) 1-x1d)(1-x)/(x^3)+1/(x^2) (x-2y)/(xy^2)-(y-2x)/(x^2y) (1-y^2)/(3xy)+(2y^3-1)/(6xy^2) ...
2. Thuc hien cac phep chia phan thuc sau(2x^3)/(5y^2):(-(4x^3)/(15y^3)) )b)(7(x+3))/(xy^2):(2(x+3))/(5x^2y^2) (x^2-16)/(x-1):(2x-8)/x d)(2x+10)/(x^3-8):((x+5)^2)/(5x-10) e(9x^2-4)/(8x^3-1):(9x^2-12x+4)/(4x^2+2x+1)...
Bai 4: Thuc hien phep tru cac phan thuc sau a) A=1/(u^2-u+1)+1-(u^2+2)/(u^3+1)(u≠q-1) b) B=(-4x)/((x-3)(x^2-9))+2/(x^2-6x+9)+x/(x^2-9)(x≠q±3) 相关知识点: 试题来源: 解析 a) Ta có: A=1/(u^2-u+1)+1-(u^2+2)/(u^3+1)...
2 B. Thuc hien phep tru cac phan thuc sau:a)1/(u^2-u+1)+1-(u^2+2)/(u^3+1)vsinu≠q-1 . al+b) (-4x)/((x-3)(x^2-9))+2/(x^2-6x+9)+x/(x^2-9)vsinx≠q±3 . 相关知识点: 试题来源: 解析 với u≠q-1;với x≠q±3. ...