\(\left(2y-5\right)\left(4y^2+10y+25\right)\)
\(=2y\left(4y^2+10y+25\right)-5\left(4y^2+10y+25\right)\)
\(=8y^3+20y^2+50y-20y^2-50y-125\)
\(=8y^3-125\)
Mà cái này là hđt thì thực hiện cái què gì nữa :?
Các câu hỏi tương tự
Thực hiện phép tính:a) dfrac{2}{5}xyleft(x^2y-5x+10yright)b) left(x^2-1right)left(x^2+2x+yright)c) left(x+3yright)^2d) left(4x-yright)^3e) left(x^2-2yright)left(x^2+2yright)g) 18x^4y^2z:10x^4yh) left(x^3y^3+dfrac{1}{2}x^2y^3-x^3y^2right):dfrac{1}{3}x^2y^2i) left(6x^3-7x^2-x+2right):left(2x+1right)k) dfrac{5x-1}{3x^2y}+dfrac{x+1}{3x^2y}l) dfrac{3x+1}{x^2-3x+1}+dfrac{x^2-6x}{x^2-3x+1}m) dfrac{2x+3}{10x-4}+dfrac{5-3x}{4-10x}n) dfrac{x}{x^2+2x+1}+dfrac{3}{5x^2-5}o) dfrac{x^2+2}{x^3-1}+dfrac{2}{x^2+x...
Đọc tiếp
Thực hiện phép tính:
a) \(\dfrac{2}{5}xy\left(x^2y-5x+10y\right)\)
b) \(\left(x^2-1\right)\left(x^2+2x+y\right)\)
c) \(\left(x+3y\right)^2\)
d) \(\left(4x-y\right)^3\)
e) \(\left(x^2-2y\right)\left(x^2+2y\right)\)
g) \(18x^4y^2z:10x^4y\)
h) \(\left(x^3y^3+\dfrac{1}{2}x^2y^3-x^3y^2\right):\dfrac{1}{3}x^2y^2\)
i) \(\left(6x^3-7x^2-x+2\right):\left(2x+1\right)\)
k) \(\dfrac{5x-1}{3x^2y}+\dfrac{x+1}{3x^2y}\)
l) \(\dfrac{3x+1}{x^2-3x+1}+\dfrac{x^2-6x}{x^2-3x+1}\)
m) \(\dfrac{2x+3}{10x-4}+\dfrac{5-3x}{4-10x}\)
n) \(\dfrac{x}{x^2+2x+1}+\dfrac{3}{5x^2-5}\)
o) \(\dfrac{x^2+2}{x^3-1}+\dfrac{2}{x^2+x+1}+\dfrac{1}{1-x}\)
p) \(\dfrac{4x+2}{15x^3y}\dfrac{5y-3}{9x^2y}+\dfrac{x+1}{5xy^3}\)
q) \(\dfrac{2x-7}{10x-4}-\dfrac{3x+5}{4-10x}\)
r) \(\dfrac{3}{2x+6}-\dfrac{x-6}{2x^2+6x}\)
x) \(\dfrac{4y^2}{11x^4}.\left(-\dfrac{3x^2}{8y}\right)\)
y) \(\dfrac{x^2-4}{3x+12}.\dfrac{x+4}{2x-4}\)
z) \(\left(x^2-25\right):\dfrac{2x+10}{3x-7}\)
t) \(\left(\dfrac{2x+1}{2x-1}-\dfrac{2x-1}{2x+1}\right):\dfrac{4x}{10x-5}\)
w) \(\left(\dfrac{1}{x^2+x}-\dfrac{2-x}{x+1}\right):\left(\dfrac{1}{x}+x-2\right)\)
Thực hiện phép tính.
\(\left(-3x^2y^3+4x^3y^4-y^4y^5\right):\left(-x^2y^3\right)\)
Thực hiện phép tính
\(\left[5\left(2y-x\right)^4+\left(x-2y\right)^2+2y-x\right]:\left(x-2y\right)\)
\(\left[5\left(2y-x\right)^4+\left(x-2y\right)^2+2y-x\right]:\left(x-2y\right)\)
Thực hiện phép tính
thực hiện phép tính:
a,\(\left(9x^2y^3-15x^4y^4\right):3x^2y-\left(2-3x^2y\right)y^2\)
b,\(\left(6x^2-xy\right):x+\left(2x^3y+3xy^2\right):xy-\left(2x-1\right)x\)
c,\(\left(x^2-xy\right):x-+\left(6x^2y^5-9x^3y^4+15x^4y^2\right):\dfrac{3}{2}x^2y^3\)
BT10: Thực hiện phép tínha,-xyz^2-3xz.yzb,-8x^2y-x.left(xyright)c,4xy^2 .x-left(-12x^2y^2right)d,dfrac{1}{2}x^2y^3-dfrac{1}{3}x^2y.y^2e,3xyleft(x^2yright)-dfrac{5}{6}x^3y^2f,dfrac{3}{4}x^4y-dfrac{1}{6}xy.x^3
Đọc tiếp
BT10: Thực hiện phép tính
\(a,-xyz^2\)\(-3xz.yz\)
\(b,-8x^2\)\(y-x.\left(xy\right)\)
\(c,4xy^2\) \(.x-\left(-12x^2y^2\right)\)
\(d,\dfrac{1}{2}x^2y^3-\dfrac{1}{3}x^2y.y^2\)
\(e,3xy\left(x^2y\right)-\dfrac{5}{6}x^3y^2\)
\(f,\dfrac{3}{4}x^4y-\dfrac{1}{6}xy.x^3\)
15 Thực hiện phép tính:
a)\([4x-2\left(x-3\right)].\left(-3x\right)\) ; b)\(3[x-3\left(4-2x\right)+8]\)
c)\(5\left(3x^2-4y^3\right)+9\left(2x^2-y^3\right)\)d) \(3x^2\left(2y-1\right)-2x^2\left(5y-3\right)\)
1, thực hiện các phép tính
a,\(\left(x+3y\right)\left(2x^2y-6xy^2\right)\)
b, \(\left(6x^5y^2-9x^4y^3+15x^3y^4\right):3x^3y^2\)
c, \(\left(2x+3\right)^2+\left(2x+5\right)^2-2\left(2x+3\right)\left(2x+5\right)\)
d, \(\left(y+3\right)^3-\left(3-y\right)^2-54y\)
thực hiện phép tính
a, \(3x^2y\left(2x^2-xy+5y^2\right)\)
b, \(\left(x+2\right)\left(x^2+3x-4\right)\)
thực hiện phép tính \(\left(4x^5+3xy^4-y^5+2x^4y-6x^3y^2\right)\div\left(2x^3+y^3-2xy^2\right)\)