thuc hien phep tinh :
a, (x+1)(1+x-x^2+x^3-x^4)-(x-1)(1+x+x^2+x^3+x^4)
b, (2b^2-2-5b+6b^3)(3+3b^2-b)
Giup mk not bai nay , dang gap !
Thuc hien phep tinh:
a, (x -2) ^3 -x(x+1)(x-1) + 6x(x -3)
b, (x-2)(x^2 - 2x +4)(x+2)(x^2 +2x + 4)
Thanks moi ng nha !
thuc hien phep tinh:3*x^2*(6*x^(n-3)+1)-2*x^n*(9*x^(n-3)-1)
Thuc hien phep tinh
1) \(\frac{1}{x+2}+\frac{3}{x^2-4}+\frac{x-14}{\left(x^2+4x+4\right).\left(x-2\right)}\)
2) \(\frac{x+1}{x-3}-\frac{1-x}{x+3}-\frac{2x.\left(1-x\right)}{9-x^2}\)
thuc hien phep chia
a,(7(x^2-1)^4+2(1-x)^3-3(x-1)^2): 2(x-1)^2
b,5(x^3-y^3)+(x-y)^3:(x-y)^2
1) thuc hien phep tinh:
\(\frac{4}{x+2}+\frac{2}{x-2}+\frac{5x-6}{4-x}\)
thuc hien phep tinh :
\(\frac{1}{x-1}-\frac{x^3-x}{x^2+1}\left(\frac{1}{x^2-2x+1}+\frac{1}{1-x^2}\right)\)
bai 1 thuc hien phep tinh a)\(\dfrac{\left(\dfrac{1}{x^2+4x+4}-\dfrac{1}{x^2-4x+4}\right)}{\left(\dfrac{1}{x+2}+\dfrac{1}{x-2}\right)}\)
b)\(\left(\dfrac{5x+y}{x^2-5xy}+\dfrac{5x-y}{x^2+5xy}\right)\cdot\dfrac{x^2-25y^2}{x^2+y^2}\)
Thuc hien phep tinh
(2x-3)3-(2x-1)2x(2x+1)+3(x-9) (x-2)3-(x-1)x(x+1)-13x